A fastening device for curved metal surface processing

Abstract

The present invention belongs to the technical field of clamping for metal surface processing of machine tool parts, and in particular, is a fastening device for curved metal surface processing, comprising a base frame for supporting an adjustment mechanism, an adjustment mechanism arranged above the base frame for fixing the clamping mechanism, and a clamping mechanism, comprising a telescopic cylinder fixedly sleeved on the adjustment mechanism, a connecting block connected to the telescopic cylinder, a gear plate arranged in the connecting block, two connecting rods arranged in a triangular symmetry and meshing with the gear plate, a plurality of adjustment blocks arranged between the two connecting rods, and a plurality of connecting sleeves with balls corresponding to the adjustment blocks in a one-to-one manner; through the telescopic cylinder extension and retraction, the connecting rod rotates along the gear plate to drive the plurality of adjustment blocks to move synchronously, the abutment sleeve telescopically moves in the adjustment block, and the curved metal is clamped by the balls. The fastening device can be applied to the effective clamping and fastening of curved metals of various specifications and sizes during processing, and has good practicality.

Description

Technical Field

[0001] The invention relates to the technical field of metal surface processing of machine tool parts, and in particular to a fastening device for curved metal surface processing. Background Art

[0002] In the production and processing of metal products, in order to improve the service life and adaptability of metal products, the surface of metal products will be processed. Metal surface treatment is a process method that artificially forms a surface layer on the surface of the base material that has different mechanical, physical and chemical properties from the base material. The purpose of surface treatment is to meet the corrosion resistance, wear resistance, decoration or other special functional requirements of the product. For metal castings, our more commonly used surface treatment methods are mechanical grinding, chemical treatment, surface heat treatment and surface spraying, etc.

[0003] In some metal surface treatment processes, in order to facilitate the operation of the staff, a fastening device is used to assist in positioning and fixing the metal parts to be processed. For example, the existing public document CN220029997U-Metal Surface Treatment Processing Fixing Device discloses a fixing device for metal surface processing. However, the existing processing fastening device still has the following shortcomings in actual use:

[0004] 1. Although the existing fastening devices for metal surface processing can realize the positioning and fixing of metal parts during processing, it is difficult for the existing fastening devices to effectively position and fix metal products with curved surfaces (such as round tubes, corrugated plates, bowl-shaped plates, etc.), which brings inconvenience to the processing of metal surfaces;

[0005] 2. Although the existing fastening devices for metal surface processing can realize the positioning and fixation of metal parts during processing, their applicability is relatively narrow. In actual use, they can only be used to fix metal products of similar specifications or the same shape, and cannot be used to fix metal products of different shapes or sizes, and have poor practicality.

[0006] In view of the problem that the existing fastening device for metal surface processing is inconvenient for fastening curved metal in actual use, a fastening device for curved metal surface processing is proposed. Summary of the invention

[0007] In order to solve the defects existing in the prior art, the purpose of the present invention is to provide a fastening device for curved metal surface processing, which can realize the clamping and fixing of metal products with different curved shapes through the extension and retraction of the telescopic cylinder, the synchronous movement of multiple adjustment blocks, and the setting of the rotating rod slidingly sleeved on the placement plate.

[0008] The present invention is achieved through the following technical solutions.

[0009] The present invention provides a fastening device for curved metal surface processing, comprising:

[0010] a base frame for supporting the adjustment mechanism;

[0011] The clamping mechanism comprises a telescopic cylinder, a connecting block connected to the telescopic cylinder, a gear plate arranged in the connecting block, two connecting rods meshing with the gear plate and arranged in a triangular symmetry, a plurality of adjusting blocks arranged between the two connecting rods, and a plurality of engaging sleeves connected to the balls in a one-to-one correspondence with the adjusting blocks;

[0012] Through the telescopic cylinder, the connecting rod rotates along the gear plate to drive multiple adjustment blocks to move synchronously, and the abutment sleeve moves in the adjustment block, and the curved metal is clamped by the abutment ball;

[0013] The adjusting mechanism comprises two rectangular frames symmetrically arranged above the base frame and placement plates arranged on both sides of the rectangular frames, which are used to fix the clamping mechanism.

[0014] As a preferred solution of the present invention, the abutment sleeve includes a telescopic sleeve fixedly sleeved on the adjustment block, one end of the telescopic sleeve is slidably connected to a T-shaped column, a first spring is arranged in the telescopic sleeve inside the T-shaped column, and one end of the T-shaped column is sleeved with an abutment ball.

[0015] As a preferred solution of the present invention, two ends of two adjacent adjustment blocks are slidably connected through a first rotating column and a first fixed sleeve; the adjustment blocks at both ends are rotationally connected to the connecting rod through a matching piece.

[0016] As a preferred solution of the present invention, a ratchet disk with ratchet teeth is fixed to one end of the first rotating column, on which a symmetrically arranged pawl is engaged. The pawl rotates around the positioning column on the end face of the first fixed sleeve, and a metal spring is engaged on the side of the pawl away from the ratchet disk.

[0017] As a preferred solution of the present invention, semi-arc teeth are fixedly provided on the outer side wall of the connecting end of the two connecting rods and the gear plate, the two semi-arc teeth are meshed with the same gear plate, and the connecting rod is rotatably connected to the connecting block.

[0018] As a preferred solution of the present invention, the gear plate is slidably connected to a guide groove provided on the connecting block via a rotating shaft, and a second spring is slidably sleeved on the rotating shaft.

[0019] As a preferred solution of the present invention, a second locking block is fixedly provided at one end of the rotating shaft, and a first locking block aligned with the second locking block is fixedly provided on an outer side wall of the connecting block.

[0020] As a preferred solution of the present invention, the rectangular frame is composed of two symmetrical long rods and two symmetrical short rods. The telescopic cylinder is fixedly sleeved on the middle part of the top surface of the short rod. The middle parts of the two long rods are fixedly connected by a rotating rod. The rotating rod is slidably sleeved on one end of the placement plate. A groove for clearance fitting of the long rods is provided on the top surface of the placement plate on one side of the rotating rod.

[0021] As a preferred solution of the present invention, a sliding groove is arranged on the bottom surface of the placement plate outside the rectangular frame in parallel with the groove, a sliding plate is fitted in the gap in the sliding groove, and both ends of the sliding plate are fixedly connected to the top surface of the base frame.

[0022] As a preferred solution of the present invention, an L-shaped groove is provided on one side of the top surface of the placement plate between the two grooves.

[0023] The present invention adopts the above technical solution, which has the following beneficial effects:

[0024] One beneficial effect of the present invention is that when the fastening device is in use, the telescopic cylinder can drive the synchronous movement of multiple adjustment blocks through the connecting rod. As the adjustment blocks move, when the abutment ball abuts against the metal surface, the abutment sleeve will be squeezed, thereby causing the T-shaped column to move in the telescopic sleeve, so as to achieve a small range of applicability adjustment according to changes in the metal surface (such as a corrugated plate with a small slope). Through the relative rotation setting between the two adjustment blocks and the connection rod rotating at the second rotation column position, after the two connecting rods are adjusted in angle, the multiple adjustment blocks can be transformed into the required curved surface shape, so as to better fit the metal surface (such as a metal pipe, bowl plate, etc.). The above setting can achieve the fastening of metals with different curved surfaces, thereby facilitating metal processing and having good applicability.

[0025] Another beneficial effect of the present invention is that when the fastening device for metal surface processing is in use, the entire rectangular frame can drive the clamping mechanism to rotate in the vertical direction with the rotating rod as the axis through the setting of the rotating rod slidingly sleeved on the placement plate. When the clamping mechanism is arranged in the horizontal direction, the bowl-shaped plate can be clamped and fastened. When the clamping mechanism is arranged in the vertical direction, the corrugated plate, round tube and other metals can be clamped and fastened. This setting can improve the adaptability of the device to the fastening of different curved metals, thereby improving practicality and reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawings described herein are used to provide a further understanding of the present invention, constitute a part of the present application, and do not constitute an improper limitation of the present invention. In the drawings:

[0027] Figure 1 It is a schematic diagram of the overall structure of a fastening device for curved metal surface processing;

[0028] Figure 2 It is a schematic diagram of the coordination of the clamping mechanism and the adjusting mechanism in the present invention;

[0029] Figure 3 It is a schematic diagram of the cooperation between the clamping mechanism and the rectangular frame in the present invention;

[0030] Figure 4 It is a schematic diagram of the overall structure of the clamping mechanism in the present invention;

[0031] Figure 5 It is a cross-sectional view of the clamping mechanism in the present invention in the axial direction of the telescopic sleeve;

[0032] Figure 6 An exploded view of the clamping mechanism of the present invention;

[0033] Figure 7 It is a schematic diagram of the cooperation between the ratchet disc and the ratchet pawl in the present invention;

[0034] Figure 8 It is a diagram of the long rod and the short rod to be matched in the present invention;

[0035] Fig. 9 It is a schematic diagram of the cooperation between the placement plate and the limiting plate in the present invention;

[0036] Fig.10 A diagram of a use state of a fastening device for curved metal surface processing;

[0037] Fig.11 The present invention is another usage state diagram of a fastening device for curved metal surface processing.

[0038] In the figure:

[0039] 100. Clamping mechanism;

[0040] 101, abutment sleeve; 101a, abutment ball; 101b, T-shaped column; 101c, telescopic sleeve; 101c-1, first spring;

[0041] 102, adjusting block; 102a, ratchet; 102a-1, first rotating column; 102a-2, fixing plate; 102a-3, ratchet; 102b, first fixing sleeve; 102c, ratchet; 102c-1, extension sleeve; 102c-2, positioning column; 102d, metal spring; 102d-1, fixing bar; 102e, positioning bolt; 102e-1, external thread; 102f, positioning hole;

[0042] 103, connecting rod; 103a, semicircular arc teeth; 103b, matching head; 103b-1, matching column; 103b-2, second fixing sleeve;

[0043] 104, connecting block; 104a, telescopic cylinder; 104b, U-shaped groove; 104b-1, second rotating column; 104b-2, guide rod; 104b-3, second spring; 104b-4, guide groove; 104b-5, first locking block;

[0044] 105, gear plate; 105a, rotating shaft; 105a-1, limiting ring; 105a-2, second locking block; 105b, locking bolt;

[0045] 200. Adjustment mechanism;

[0046] 201, rectangular frame; 201a, long rod; 201a-1, rotating rod; 201a-2, through slot; 201b, short rod; 201b-1, plug rod;

[0047] 202, placement plate; 202a, sliding groove; 202b, groove; 202c, L-shaped groove; 202d, threaded through hole;

[0048] 203, limit plate; 203a, U-shaped sleeve;

[0049] 300, base frame; 301, sliding plate. DETAILED DESCRIPTION

[0050] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. The exemplary embodiments and descriptions of the present invention are used to explain the present invention but are not intended to limit the present invention.

[0051] Example 1

[0052] Reference Figure 1 As shown, it is the first embodiment of the present invention, which provides a fastening device for curved metal surface processing, which can be used for clamping and fixing curved metals of different shapes during surface processing, including a base frame 300 for supporting and fixing the fastening device; an adjustment mechanism 200 fixed above the base frame 300, used to adjust the clamping mechanism 100 according to the specific specifications and shape of the metal; the clamping mechanism 100 is used for clamping the metal.

[0053] Specifically, Figure 2 As shown, the adjustment mechanism 200 disposed above the base frame 300 includes a rectangular frame 201 and placement plates 202 disposed on both sides of the rectangular frame 201. A plurality of pairs of relatively symmetrically disposed clamping mechanisms 100 are disposed on the rectangular frame 201.

[0054] Specifically, Figure 3 , Figure 4As shown, the clamping mechanism 100 includes a telescopic cylinder 104a symmetrically fixed on the adjustment mechanism rectangular frame 201, a connecting block 104 connected to the telescopic cylinder 104a, a gear plate 105 disposed in a U-shaped groove 104b on the connecting block 104, two connecting rods 103 arranged in a triangular symmetry and meshing with the gear plate 105 and connected to the connecting block 104, a plurality of adjustment blocks 102 disposed between the two connecting rods 103, and a plurality of abutment sleeves 101 corresponding to the adjustment blocks 102. The telescopic cylinder 104a is preferably a pneumatic cylinder or a hydraulic cylinder.

[0055] See Figure 5 As shown, the abutment sleeve 101 includes a telescopic sleeve 101c fixedly sleeved on the adjustment block 102, one end of the telescopic sleeve 101c is slidably connected to a T-shaped column 101b, a first spring 101c-1 is arranged in the telescopic sleeve 101c inside the T-shaped column 101b, the first spring 101c-1 can realize the resetting of the T-shaped column 101b, one end of the T-shaped column 101b is sleeved with an abutment ball 101a, and the arrangement of the abutment ball 101a can better fit the curved metal surface.

[0056] When the above arrangement is in use, the multiple adjustment blocks 102 drive the multiple abutting sleeves 101 to move synchronously. When the abutting ball 101a abuts against the metal curved surface, the T-shaped column 101b will be subjected to an extrusion force to cause the T-shaped column 101b to slide in the telescopic sleeve 101c. Therefore, according to the different curved surfaces, the telescopic degrees of the T-shaped column 101b in different telescopic sleeves 101c are different, so that the abutting ball 101a can better fit on the metal curved surface.

[0057] See Figure 6 As shown, a first fixed sleeve 102b is fixedly provided at one end of the adjusting block 102, and a first rotating column 102a-1 is provided at the other end of the adjusting block 102, and one end of the first rotating column 102a-1 is fixedly connected to the end face of the adjusting block 102 through a fixing plate 102a-2, and the first rotating column 102a-1 and the first fixed sleeve 102b on the two adjacent adjusting blocks 102 are slidably connected, so that the free rotation between the two adjusting blocks 102 can be realized.

[0058] The adjusting blocks 102 at both ends are rotatably connected to the connecting rod 103 via a matching piece. A matching head 103b is slidably sleeved at one end of the matching piece, one matching head 103b is fixedly provided with a matching column 103b-1 rotatably connected to the first fixed sleeve 102b, and the other matching head 103b is fixedly provided with a second fixed sleeve 103b-2 rotatably connected to the first rotating column 102a-1, so that the rotatable connection between the connecting rod 103 and the adjusting block 102 can be realized, so that when the angle between the two connecting rods 103 changes, a certain angle compensation can be performed.

[0059] like Figure 5As shown, a semi-arc tooth 103a is fixedly provided on the outer side wall of the connecting end of the other end of the connecting rod 103 and the gear plate 105, and the two semi-arc teeth 103a are meshed with the same gear plate 105, thereby realizing the limiting of the two connecting rods 103; one end of the connecting rod 103 is slidably sleeved with a second rotating column 104b-1, and the two ends of the second rotating column 104b-1 are respectively fixed on the inner wall of the U-shaped groove 104b. This arrangement can realize the rotation of the connecting rod 103 with the second rotating column 104b-1 as the axis.

[0060] When the above arrangement is in use, after the gear plate 105 and the semi-circular arc tooth 103a are disengaged, the connecting rod 103 can be rotated with the second rotating column 104b-1 as the axis, thereby realizing the change of the angle between the two connecting rods 103. As the angle of the connecting rod 103 changes, the connection between the multiple adjustment blocks 102 will rotate, so that the multiple adjustment blocks 102 are circular arc-shaped as a whole, so as to better fit with the metal curved surface. After the fitting is completed, the gear plate 105 re-engages with the semi-circular arc tooth 103a to achieve the limitation of the end of the connecting rod 103, so that the deformation state of the adjustment block 102 can be maintained.

[0061] See Figure 5 and Figure 6 As shown, the middle part of the gear plate 105 is slidably sleeved with a rotating shaft 105a to realize the rotation of the gear plate 105, so that the surface of the gear plate 105 can effectively cooperate with the semicircular arc teeth 103a; the rotating shafts 105a at both ends of the gear plate 105 are symmetrically fixed with limiting rings 105a-1 to limit the two ends of the gear plate 105; the connecting block 104 is provided with a guide groove 104b-4 for the clearance fit of the end of the rotating shaft 105a, and the guide groove 105a-1 is fixedly provided with a guide groove 104b-4 for the clearance fit of the end of the rotating shaft 105a. A guide rod 104b-2 is fixedly provided along the long side direction in 04b-4, so that the rotation shaft 105a can be moved in the axial direction of the guide rod 104b-2, and the guide rod 104b-2 is slidably sleeved on the side wall of the rotation shaft 105a, and a second spring 104b-3 is slidably sleeved on the guide rod 104b-2 on the side of the rotation shaft 105a away from the adjustment block 102. The setting of the second spring 104b-3 can realize the resetting of the rotation shaft 105a.

[0062] When the above-mentioned arrangement is in use, when the gear plate 105 needs to be disengaged from the semicircular arc tooth 103a, the gear plate 105 slides along the direction of the guide rod 104b-2. When the staff releases the gear plate 105, under the resetting action of the second spring 104b-3, the gear plate 105 can be re-engaged with the semicircular arc tooth 103a.

[0063] Furthermore, a second locking block 105a-2 is fixedly provided at one end of the rotating shaft 105a, and a first locking block 104b-5 aligned with the second locking block 105a-2 is fixedly provided on an outer side wall of the connecting block 104, and the first locking block 104b-5 and the second locking block 105a-2 are fixed together by a locking bolt 105b. When the first locking block 104b-5 and the second locking block 105a-2 are matched, this arrangement can achieve limited fixation of the rotating shaft 105a, thereby improving the stability of the matching between the gear plate 105 and the semicircular arc tooth 103a.

[0064] In actual use, the device also includes a controller for controlling each electrical component, and the controller is arranged at a position convenient for the operator to operate.

[0065] Example 2

[0066] Reference Figure 6 and Figure 7 , which is the second embodiment of the present invention, is based on the previous embodiment, except that this embodiment is proposed in order to further improve the stability of the multiple adjustment blocks 102 after deformation so that they can better fit with the curved metal.

[0067] Specifically, a ratchet disc 102a is fixedly provided at the other end of the first rotating column 102a-1, and ratchet teeth 102a-3 are symmetrically fixedly provided on the side wall of the ratchet disc 102a. The arc of the ratchet teeth 102a-3 arranged along the ratchet disc 102a is less than 180°. The two ratchet teeth 102a-3 are both engaged with symmetrically arranged pawls 102c. One end of the pawl 102c is slidably sleeved with a positioning column 102c-2, so that the pawl 102c can rotate with the positioning column 102c-2 as the axis. The pawl 102c is movable, and one end of the positioning column 102c-2 is fixedly connected to the end surface of the first fixed sleeve 102b, and a metal spring sheet 102d is pressed against the side surface of the pawl 102c away from the ratchet disk 102a. The elastic force of the metal spring sheet 102d can achieve a more stable fit between the pawl 102c and the ratchet tooth 102a-3, and the other end of the metal spring sheet 102d is inserted into the fixing strip 102d-1, and one end of the fixing strip 102d-1 is fixed on the end surface of the first fixed sleeve 102b.

[0068] When the above arrangement is in use, when adjacent adjustment blocks 102 rotate, the ratchet plate 102a on the first rotating column 102a-1 will adaptively rotate. During the rotation, the pawl 102c will move between each ratchet tooth 102a-3. According to the characteristic of only one-way limiting between the pawl 102c and the ratchet tooth 102a-3, the two adjustment blocks 102 can be fixed after the rotation is completed.

[0069] Further, such as Figure 7As shown, an extension sleeve 102c-1 is fixedly provided on the outer wall of the pawl 102c near one end of the positioning column 102c-2, and a positioning bolt 102e is slidably sleeved in the extension sleeve 102c-1, and an external thread 102e-1 that spirally cooperates with the extension sleeve 102c-1 is provided on the outer wall of the upper end of the positioning bolt 102e. The setting of the external thread 102e-1 can fix the positioning column 102c-2 in the extension sleeve 102c-1; a positioning hole 102f for slidingly inserting one end of the positioning bolt 102e is provided on the end face of the first fixed sleeve 102b along the rotation track surface of the extension sleeve 102c-1; when one end of the positioning bolt 102e is inserted into the positioning hole 102f, the pawl 102c is disengaged from the ratchet 102a-3.

[0070] When the above arrangement is in use, the pawl 102c can be disengaged from the ratchet tooth 102a-3 through the cooperation of the positioning bolt 102e and the positioning hole 102f, thereby avoiding the other pawl 102c from being stuck with the ratchet tooth 102a-3 during unidirectional rotation.

[0071] In addition, it should be noted that in actual use, when the ratchet 102a-3 is only matched with one pawl 102c, it can facilitate the deformation of the adjustment block 102 (such as arc shape, corrugated shape, etc.). When the ratchet 102a-3 is matched with two pawls 102c, the ratchet plate 102a is in a locked state, so that it is convenient to make multiple adjustment blocks 102 in a parallel state. Such a state can be suitable for use with metals with smaller curvature.

[0072] Example 3

[0073] Reference Figure 2 , Figure 3 , Figure 8 and Fig. 9 , which is the third embodiment of the present invention, is based on the previous embodiment, except that in order to make the clamping mechanism 100 suitable for clamping and fastening metals with different curved surfaces, the specific structure of the adjustment mechanism 200 is described to facilitate better implementation.

[0074] Specifically, the two adjustment mechanisms 200 are symmetrically arranged above the base frame 300, and the two clamping mechanisms 100 are symmetrically arranged above the rectangular frame 201. Figure 1 As shown, this arrangement can be applicable to the clamping and fastening of bowl-shaped (concave side downward) metal, and the two clamping mechanisms 100 on the same rectangular frame 201 are respectively clamped on the inner and outer sides of the bowl-shaped metal; of course, when facing a smaller bowl-shaped metal, the bowl-shaped metal can be clamped between the two clamping mechanisms 100 on the same rectangular frame 201.

[0075] like Figure 8As shown, the rectangular frame 201 is composed of two symmetrical long rods 201a and two symmetrical short rods 201b, and the fixed section of the telescopic cylinder 104a is fixedly sleeved on the middle of the top surface of the short rod 201b, and the middle parts of the two long rods 201a are fixedly connected by a rotating rod 201a-1, and the rotating rod 201a-1 is slidably sleeved on one end of the placement plate 202, and a groove 202b for the clearance fit of the long rod 201a is opened on the top surface of the placement plate 202 on one side of the rotating rod 201a-1, as shown in FIG. Fig. 9 As shown, this arrangement can realize that the rectangular frame 201 drives the clamping mechanism 100 to rotate with the rotating rod 201a-1 as the axis, so that the clamping mechanism 100 is arranged symmetrically up and down, as shown in FIG. Fig.10 As shown, this state can be applied to the clamping and fastening of metal pipes and corrugated pipes.

[0076] A U-shaped sleeve 203a is fixed on the top surface of the placement plate 202 on one side of the groove 202b, and a limit plate 203 is slidably fitted in the U-shaped sleeve 203a. The limit plate 203 is arranged on the side close to the rotating rod 201a-1. This arrangement can realize the limit fixation of the rectangular frame 201 after the state is adjusted.

[0077] Furthermore, a sliding groove 202a is provided on the bottom surface of the placement plate 202 outside the rectangular frame 201 in parallel with the groove 202b, and a sliding plate 301 is provided in the gap between the sliding groove 202a. Fig.10 As shown, both ends of the sliding plate 301 are fixedly connected to the top surface of the base frame 300; a threaded through hole 202d is also provided on the top surface of the placement plate 202 at the position of the sliding groove 202a, and a fixing bolt is spirally sleeved in the threaded through hole 202d, and one end of the fixing bolt is abutted against the top surface of the sliding plate 301, thereby realizing the limited fixation between the placement plate 202 and the sliding plate 301.

[0078] When the above arrangement is used, by sliding and adjusting the placement plate 202 on the sliding plate 301, it is possible to clamp and fasten metals of different sizes, thereby improving the adaptability of use.

[0079] Example 4

[0080] Reference Figure 8 and Fig. 9 , which is the fourth embodiment of the present invention, is based on the previous embodiment, except that this embodiment is proposed in order to enrich the clamping forms of the device for different curved metals, thereby better improving the practicability of the device.

[0081] Specifically, an L-shaped groove 202c is opened on one side of the top surface of the placement plate 202 between the two grooves 202b, and the L-shaped grooves 202c on the two placement plates 202 are arranged close to each other. This arrangement can facilitate the construction of a compensation plate between the two placement plates 202, and facilitate the placement of corrugated plates, metal pipes, etc.

[0082] The two ends of the long rod 201a are symmetrically provided with rectangular through grooves 201a-2, and the two ends of the short rod 201b are fixed with insertion rods 201b-1 for slidingly inserting into the rectangular through grooves 201a-2, and the insertion rods 201b-1 and the rectangular through grooves 201a-2 are fixed by fixing bolts, which can facilitate the detachable fit between the short rod 201b and the long rod 201a. Fig.11 As shown, this state facilitates the clamping and fixing of the bowl-shaped metal (with the groove facing upward) by the clamping mechanism 100. The bowl-shaped metal is placed on the inner side of the long rod 201a, and the clamping mechanism 100 is clamped on the outer side of the upper end of the metal.

[0083] In addition, it should be noted that the components not described in detail in this article are prior art.

[0084] The present invention is not limited to the above-mentioned embodiments. On the basis of the technical solution disclosed in the present invention, technicians in this field can make some substitutions and deformations to some technical features therein according to the disclosed technical content without creative labor, and these substitutions and deformations are all within the protection scope of the present invention.

Claims

1. A fastening device for curved metal surface processing, characterized in that: include: A base frame (300) for supporting the adjustment mechanism (200); The clamping mechanism (100) comprises a telescopic cylinder (104a), a connecting block (104) connected to the telescopic cylinder (104a), a gear plate (105) disposed in the connecting block (104), two connecting rods (103) meshing with the gear plate (105) and arranged in a triangular symmetry, a plurality of adjustment blocks (102) disposed between the two connecting rods (103), and a plurality of abutment sleeves (101) connected to abutment balls (101a) in a one-to-one correspondence with the adjustment blocks (102); The telescopic cylinder (104a) is extended and retracted, and the connecting rod (103) rotates along the gear plate (105) to drive the multiple adjustment blocks (102) to move synchronously, and the abutment sleeve (101) is telescopically moved in the adjustment block (102), and the curved metal is clamped by the abutment ball (101a); The adjustment mechanism (200) comprises two rectangular frames (201) symmetrically arranged above the base frame (300) and placement plates (202) arranged on both sides of the rectangular frames (201), and is used to fix the clamping mechanism (100).

2. A fastening device for curved metal surface processing as claimed in claim 1, characterized in that: The abutment sleeve (101) comprises a telescopic sleeve (101c) fixedly sleeved on the adjustment block (102); one end of the telescopic sleeve (101c) is slidably connected to a T-shaped column (101b); a first spring (101c-1) is arranged in the telescopic sleeve (101c) inside the T-shaped column (101b); and one end of the T-shaped column (101b) is sleeved with an abutment ball (101a).

3. A fastening device for curved metal surface processing as claimed in claim 1, characterized in that: The two ends of two adjacent adjustment blocks (102) are slidably sleeved via a first rotating column (102a-1) and a first fixed sleeve (102b); the adjustment blocks (102) at both ends are rotationally connected to the connecting rod (103) via a matching piece.

4. A fastening device for curved metal surface processing as claimed in claim 3, characterized in that: A ratchet disk (102a) with ratchet teeth (102a-3) is fixedly provided at one end of the first rotating column (102a-1), and symmetrically arranged ratchet claws (102c) are engaged on the ratchet teeth (102a-3). The ratchet claws (102c) rotate around a positioning column (102c-2) on the end surface of the first fixed sleeve (102b) as an axis, and a metal spring sheet (102d) is engaged on a side surface of the ratchet claw (102c) away from the ratchet disk (102a).

5. A fastening device for curved metal surface processing as claimed in claim 1, characterized in that: Semi-circular arc teeth (103a) are fixedly arranged on the outer side wall of the connecting end of the two connecting rods (103) and the gear plate (105); the two semi-circular arc teeth (103a) are meshed with the same gear plate (105); and the connecting rod (103) is rotatably connected to the connecting block (104).

6. A fastening device for curved metal surface processing as claimed in claim 1, characterized in that: The gear plate (105) is slidably connected to a guide groove (104b-4) provided on the connection block (104) via a rotating shaft (105a), and a second spring (104b-3) is slidably sleeved on the rotating shaft (105a).

7. A fastening device for curved metal surface processing as claimed in claim 6, characterized in that: A second locking block (105a-2) is fixedly provided at one end of the rotating shaft (105a), and a first locking block (104b-5) aligned with the second locking block (105a-2) is fixedly provided on an outer side wall of the connecting block (104).

8. A fastening device for curved metal surface processing as claimed in claim 1, characterized in that: The rectangular frame (201) is composed of two symmetrical long rods (201a) and two symmetrical short rods (201b); the telescopic cylinder (104a) is fixedly sleeved on the middle of the top surface of the short rod (201b); the middle parts of the two long rods (201a) are fixedly connected via a rotating rod (201a-1); the rotating rod (201a-1) is slidably sleeved on one end of a placement plate (202); and a groove (202b) for clearance matching with the long rod (201a) is provided on the top surface of the placement plate (202) on one side of the rotating rod (201a-1).

9. A fastening device for curved metal surface processing as claimed in claim 8, characterized in that: A sliding groove (202a) is provided on the bottom surface of the placement plate (202) outside the rectangular frame (201) in parallel with the groove (202b), a sliding plate (301) is fitted in the gap in the sliding groove (202a), and both ends of the sliding plate (301) are fixedly connected to the top surface of the base frame (300).

10. A fastening device for curved metal surface processing as claimed in claim 8, characterized in that: An L-shaped groove (202c) is provided on one side of the top surface of the placement plate (202) between the two grooves (202b).

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