Welding process for loader-digger hood

Abstract

The invention discloses a loader-digger hood welding process. The loader-digger hood welding process comprises the steps that S1, a bent plate, a support, an exhaust pipe, an air inlet pipe and reinforcing ribs are welded into a rear hood welding assembly through a self-positioning method; s2, a front cover point splicing tool is adopted for point splicing of a front cover welding assembly; s3, a front mesh enclosure lower installation support, a frame installation plate, a left baffle, a left stand column, a front mesh enclosure upper installation support, a cross beam, a locking plate, a right baffle and a right stand column are placed into the front enclosure splicing point tool in the step S2, and positioning is conducted with the frame installation plate as the benchmark; s4, point splicing of the hood welding assembly is conducted through a hood point splicing tool; s5, the left side plate, the top plate and the right side plate are put into the hood point splicing tool in the step S4, and other parts are positioned with the top plate as the reference; and S6, the welded rear cover welding assembly, the welded front cover welding assembly and the welded engine cover welding assembly are subjected to trial assembly. Attractive appearance of the hood is guaranteed, welding deformation is reduced, weld joint polishing time is shortened, and welding efficiency is improved.

Description

Technical Field

[0001] The invention relates to a welding process for a hood of an excavator loader and belongs to the field of production, manufacturing and processing of engineering machinery covering parts. Background Art

[0002] Backhoe loaders are multifunctional devices, mainly used for digging ditches, laying pipes and underground cables, laying foundations for buildings and establishing drainage systems, etc. As an important component of the backhoe loader cover, the hood covers parts such as sheet metal (pressed, bent), profiles, thin plates, thick plates, etc. The appearance quality, assembly efficiency and installation accuracy of the hood mainly depend on the welding quality of the hood, which in turn depends on the quality of the parts, the planning and design of the welding process, and the quality of the parts depends on their respective processing technology and dimensional control methods.

[0003] The existing hood structure of the excavator loader is a dicyclopentadiene (DCPD) skin (assembled) + metal frame structure, which is weak in strength, easy to deform, and poor in anti-collision and anti-fall capabilities. In order to improve the overall strength and appearance of the hood, a new metal hood (metal skin + metal frame) is designed. Figure 1 As shown, the hood of the backhoe loader mainly includes three parts: a rear hood assembly 1 (upper cover plate, rear hood welding assembly (bending plate, support, exhaust pipe, intake pipe and reinforcing ribs)), a hood welding assembly 2, and a front hood welding assembly 3. In order to improve welding efficiency and appearance quality, reduce welding deformation, and reduce employee work intensity and weld grinding time, the present invention aims to provide a backhoe loader hood welding process. Summary of the invention

[0004] In view of the problems existing in the above-mentioned prior art, the present invention provides a welding process for a hood of an excavator loader.

[0005] In order to achieve the above object, the present invention adopts a backhoe loader hood welding process, comprising the following steps:

[0006] S1. Use the self-positioning method to weld the bent plate, support, exhaust pipe, intake pipe and reinforcement ribs into a rear cover welding assembly;

[0007] S2. Use the front cover jointing tool to joint the front cover welding assembly;

[0008] S3, placing the lower mounting bracket of the front net cover, the frame mounting plate, the left baffle, the left upright, the upper mounting bracket of the front net cover, the crossbeam, the lock plate, the right baffle, and the right upright into the front cover assembly tooling of step S2, and positioning them with the frame mounting plate as a reference;

[0009] S4. Use the hood jointing tool to joint the hood welding assembly;

[0010] S5, put the left side panel, top panel and right side panel into the hood assembly tooling of step S4, and position the other parts based on the top panel;

[0011] S6. Test assemble the welded rear cover welding assembly, front cover welding assembly and engine hood welding assembly.

[0012] In some embodiments, the front cover assembly tooling includes a front cover assembly platform, a left positioning assembly and a right positioning assembly symmetrically arranged on the front cover assembly platform, and a positioning seat V arranged at the center line of the front cover assembly platform;

[0013] The left positioning assembly and the right positioning assembly both include a positioning seat I, a positioning seat II, a front cover contour positioning seat, a positioning seat III and a positioning seat IV which are arranged in sequence from back to front, and the positioning seat I, the positioning seat II and the positioning seat V are all equipped with latches.

[0014] In some embodiments, step S3 specifically includes the following steps: placing the frame mounting plate on the positioning seat I, and using the pin I and the positioning seat I for double positioning; placing the left column, the right column, the left baffle and the right baffle on the front cover contour positioning seat, and using the frame mounting plate and the front cover contour positioning seat for positioning; the positioning seat IV, the left column and the right column position the crossbeam, and use the crossbeam, the positioning seat V and the pin III to position the lock plate; the left column, the right column, the positioning seat II and the pin II position the lower mounting bracket of the front mesh cover; the left column, the right column, the positioning seat III and the pin II position the upper mounting bracket of the front mesh cover.

[0015] In some embodiments, each positioning seat is fixed to the front cover assembly point platform by bolts.

[0016] In some embodiments, the hood assembly tool comprises a hood assembly platform, on which a hood profiling positioning seat and four symmetrically arranged flip limit seats are installed, and symmetrically arranged flip positioning seats are installed on both sides of the hood profiling positioning seat;

[0017] The flip limit seat is used for positioning the left side plate, the top plate and the right side plate in the left and right directions, and the flip positioning seat is used for positioning the left side plate, the top plate and the right side plate in the front and back directions.

[0018] In some embodiments, the flip positioning seat includes a positioning support, a U-shaped connecting groove is installed on the positioning support, a flip positioning plate is installed at one end of the U-shaped connecting groove through a positioning connecting pin, and the other end of the flip positioning plate is fixed by a threaded limit pin.

[0019] In some embodiments, the flip limit seat includes a limit support, a rotating seat is rotatably mounted on the limit support, and a limit plate and a limit block assembly for cooperating with the limit rotating seat are installed on the limit support.

[0020] In some embodiments, the limit block assembly includes a U-shaped block mounted on a limit support and a rotating shaft mounted on a rotating seat, and the rotating shaft is placed in the U-shaped block.

[0021] In some embodiments, the step S5 specifically includes the following steps: using an inverted placement method to position other components with the top plate as a reference;

[0022] The top plate is positioned by using a hood profiling positioning seat, and a positioning plate is provided in the XY direction of the hood profiling positioning seat for positioning in the XY direction; the mesh plate and the left side plate are first welded into a left side plate assembly, and the mesh plate and the right side plate are first welded into a right side plate assembly;

[0023] The top plate, the flip positioning seat I, the flip positioning seat II, the flip limiting seat I and the flip limiting seat II are used to position the left side plate assembly and the right side plate assembly to form a skin assembly;

[0024] The rear crossbeam, front crossbeam, longitudinal beam, left rear reinforcement rib, right rear reinforcement rib, left front reinforcement rib and right front reinforcement rib are used to reinforce the strength to form an integral hood welding assembly.

[0025] In some embodiments, the hood welding assembly is assembled by resistance spot welding + CO2 welding, the welds between the left plate, top plate and right plate are welded by resistance spot welding, and the distance between the welding points is controlled at 40-60mm.

[0026] In some embodiments, the front cover assembly tooling and the hood assembly tooling are any one of mechanical, pneumatic, and hydraulic types.

[0027] The existing welding process for the hood of engineering machinery is to place it forward, weld the frame first and then weld the skin, and use CO2 welding. Compared with the existing technology, the welding process for the hood of the excavator loader of the present invention is to place it in an inverted position, weld the skin first and then weld the frame, and use a combination of resistance spot welding + CO2 welding for welding. This welding process can ensure that the gap between the left and right side panels and the top panel is beautiful, the welding deformation is small, the weld grinding time is short, the welding efficiency is high, and the requirements of mass production are met. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0029] Figure 1 It is a structural schematic diagram of the backhoe loader hood of the present invention;

[0030] Figure 2 for Figure 1 Exploded diagram of

[0031] Figure 3 It is a structural schematic diagram of the front cover welding assembly of the present invention;

[0032] Figure 4 It is a structural schematic diagram of the front cover assembly tooling of the present invention;

[0033] Figure 5 It is a schematic diagram of the assembly points of the front cover welding assembly of the present invention;

[0034] Figure 6 It is a structural schematic diagram of the hood welding assembly of the present invention;

[0035] Figure 7 It is a structural schematic diagram of the hood assembly tool of the present invention;

[0036] Figure 8 It is a structural schematic diagram of the flip positioning seat 1 of the present invention;

[0037] Fig. 9 It is a structural schematic diagram of the flip limit seat 1 of the present invention;

[0038] Fig.10 It is a schematic diagram of the assembly points of the hood welding assembly of the present invention;

[0039] In the figure: 1. rear cover assembly;

[0040] 2. Hood welding assembly, 21. Left side plate, 22. Left mounting seat, 23. Longitudinal beam, 24. Top plate, 25. Front cross beam, 26. Right front reinforcement rib, 27. Right side plate, 28. Mesh plate, 29. Right rear reinforcement rib, 210. Right mounting seat, 211. Rear cross beam, 212. Left front reinforcement rib, 213. Left rear reinforcement rib;

[0041] 3. Front cover welding assembly, 31. Front net cover lower mounting bracket, 32. Frame mounting plate, 33. Left baffle, 34. Left column, 35. Front net cover upper mounting bracket, 36. Crossbeam, 37. Lock plate, 38. Right baffle, 39. Right column;

[0042] 4. front cover assembly tooling, 41. front cover assembly platform, 42. positioning seat I, 43. latch I, 44. positioning seat II, 45. latch II, 46. front cover contour positioning seat, 47. positioning seat III, 48. positioning seat IV, 49. latch III, 410. positioning seat V;

[0043] 5. Hood assembly tooling, 51. Hood assembly platform, 52. Hood profiling positioning seat, 53. Flip positioning seat I, 53-1. Positioning support, 53-2. U-shaped connecting groove, 53-3. Positioning connecting bolt, 53-4. Positioning connecting pin, 53-5. Flip positioning plate, 53-6. Threaded limit pin, 53-7. Positioning nut, 54. Flip limit seat I, 54-1. Limit support, 54-2. U-shaped block, 54-3. Limit pin, 54-4. Rotating shaft, 54-5. Long shaft sleeve, 54-6. Rotating seat, 54-7. Limit plate, 54-8. Limit connecting bolt, 55. Flip limit seat II, 56. Flip positioning seat II;

[0044] 6. Resistance welding tongs. DETAILED DESCRIPTION

[0045] In order to make the objectives, technical solutions and advantages of the present invention more clear, the technical solutions of the present application are described in detail below with the help of accompanying drawings and specific embodiments. It should be understood that the embodiments of the present application and the specific features in the embodiments are detailed descriptions of the technical solutions of the present application, rather than limitations on the technical solutions of the present application. In the absence of conflict, the embodiments of the present application and the technical features in the embodiments can be combined with each other.

[0046] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by the terms "front", "rear", "left", "right", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the protection content of the present invention.

[0047] like Figure 1-Figure 10 As shown, a backhoe loader hood welding process includes the following steps:

[0048] S1. Use the self-positioning method to weld the bent plate, support, exhaust pipe, intake pipe and reinforcement ribs into a rear cover welding assembly;

[0049] S2, using the front cover jointing tool 4 to joint the front cover welding assembly 3;

[0050] S3, put the front net cover lower mounting bracket 31, the frame mounting plate 32, the left baffle 33, the left column 34, the front net cover upper mounting bracket 35, the crossbeam 36, the lock plate 37, the right baffle 38, and the right column 39 into the front cover assembly tool 4 of step S2, and position them with the frame mounting plate 32 as the reference;

[0051] S4, using the hood jointing tool 5 to joint the hood welding assembly 2;

[0052] S5, put the left side plate 21, the top plate 24, and the right side plate 27 into the hood assembly tool 5 of step S4, and position the other parts based on the top plate 24;

[0053] S6. Test-assemble the welded rear cover welding assembly, front cover welding assembly 3, and hood welding assembly 2 to ensure that the gaps are uniform and there is no interference.

[0054] In some embodiments, Figure 4 As shown, the front cover assembly tool 4 includes a front cover assembly platform 41, a left positioning component and a right positioning component symmetrically arranged on the front cover assembly platform 41, and a positioning seat V 410 arranged at the center line of the front cover assembly platform 41, and the positioning seat V 410 is located at the front side of the front cover assembly platform 41;

[0055] The left positioning assembly and the right positioning assembly each include a positioning seat I 42, a positioning seat II 44, a front cover contour positioning seat 46, a positioning seat III 47 and a positioning seat IV 48 arranged in sequence from back to front, and the positioning seat I 42, the positioning seat II 44 and the positioning seat V 410 are all installed with latches.

[0056] In some embodiments, Figure 3 , Figure 4 As shown, step S3 specifically includes the following steps:

[0057] The frame mounting plate 32 is placed on the positioning seat I 42, and the latch I 43 and the positioning seat I 42 are used for double positioning; the left column 34, the right column 39, the left baffle 33, and the right baffle 38 are placed on the front cover profiling positioning seat 46, and the frame mounting plate 32 and the front cover profiling positioning seat 46 are used for positioning; the positioning seat IV 48, the left column 34, and the right column 39 position the crossbeam 36, and the crossbeam 36, the positioning seat V 410 and the latch III 49 are used to position the lock plate 37; the left column 34, the right column 39, the positioning seat II 44 and the latch II 45 position the lower mounting bracket 31 of the front net cover;

[0058] The left column 34, the right column 39, the positioning seat III 47 and the latch II 45 position the mounting bracket 35 on the front net cover.

[0059] In some embodiments, each positioning seat is fixed to the front cover assembly platform 41 by bolts, which is convenient for disassembly and assembly.

[0060] In some embodiments, Figure 6 , Figure 7As shown, the hood assembly tool 5 includes a hood assembly platform 51, on which four symmetrically arranged flip limit seats are installed, including two flip limit seats I 54 and two flip limit seats II 55; a hood profiling positioning seat 52 is installed in the middle of the hood assembly platform 51, and flip positioning seats II 56 and flip positioning seats I 53 are installed on both sides of the hood profiling positioning seat 52, and the flip positioning seats I 53 and the flip positioning seats II 56 are symmetrically arranged;

[0061] The flip limit seat is used for positioning the left side plate 21, the top plate 24, and the right side plate 27 in the left and right directions, and the flip positioning seat is used for positioning the left side plate 21, the top plate 24, and the right side plate 27 in the front and back directions.

[0062] In some embodiments, the structures of the flip positioning seats are the same, such as Figure 8 As shown, taking the flip positioning seat I 53 as an example, it includes a positioning support 53-1, on which a U-shaped connecting groove 53-2 is installed through a positioning connecting bolt 53-3, and one end of the U-shaped connecting groove 53-2 is installed with a flip positioning plate 53-5 through a positioning connecting pin 53-4 and a positioning nut 53-7. The flip positioning plate 53-5 can rotate along the positioning connecting pin 53-4. When the flip positioning plate 53-5 is flipped into place, the flip positioning plate 53-5 is fixed and limited by two threaded limit pins 53-6.

[0063] In some embodiments, Fig. 9 As shown, the structure of the flip limit seat is explained by taking the flip limit seat I 54 as an example, which includes a limit support 54-1, on which a rotating seat 54-6 is rotatably installed through a limit pin 54-3 and a long shaft sleeve 54-5, two U-shaped blocks 54-2 are symmetrically installed on the limit support 54-1, and a rotating shaft 54-4 is installed on the rotating seat 54-6 for limiting the U-shaped block 54-2. In order to further improve the limiting effect on the rotating seat 54-6, a U-shaped limiting plate 54-7 is also installed on the limit support 54-1 through a limiting connecting bolt 54-8.

[0064] In some embodiments, Figure 6 , Figure 7 As shown, the step S5 specifically includes the following steps: adopting an inverted placement method to position other parts with the top plate 24 as a reference;

[0065] The top plate 24 is positioned by using a hood profiling positioning seat 52, and a positioning plate is provided in the XY direction of the hood profiling positioning seat 52 for positioning in the XY direction; the mesh plate 28 and the left side plate 21 are first welded into a left side plate assembly, and the mesh plate 28 and the right side plate 27 are first welded into a right side plate assembly;

[0066] The top plate 24, the flip positioning seat I 53, the flip positioning seat II 56, the flip limit seat I 54 and the flip limit seat II 55 are used to position the left side plate assembly and the right side plate assembly to form a skin assembly;

[0067] The rear cross beam 211, the front cross beam 25, the longitudinal beam 23, the left rear reinforcing rib 213, the right rear reinforcing rib 29, the left front reinforcing rib 212, and the right front reinforcing rib 26 are used to reinforce the strength to form an integral hood welding assembly 2.

[0068] In some embodiments, the hood welding assembly 2 is assembled by resistance spot welding + CO2 welding. In order to ensure that the gap between the left and right side plates and the top plate 24 is beautiful, the welding deformation is small, and the welding efficiency is high, a resistance welding clamp 6 is used. Fig.10 As shown, the welds between the left side plate 21, the right side plate 27 and the top plate 24 are welded by resistance spot welding, and the top plate 24 is placed horizontally to facilitate resistance spot welding and the operation of employees.

[0069] In some embodiments, the front cover assembly tool 4 and the hood assembly tool 5 are any one of mechanical, pneumatic and hydraulic. Similarly, the flip positioning seat can realize mechanical flipping, locking and returning to the original position, and can also realize pneumatic or hydraulic flipping, locking and returning to the original position. The flip limit seat can realize mechanical flipping, locking and returning to the original position, and can also realize pneumatic or hydraulic flipping, locking and returning to the original position.

[0070] The hood welding process of the excavator loader of the present invention adopts a mechanical flipping tooling to position and assemble the hood welding assembly, that is, it is placed upside down, and a resistance spot welding + CO2 welding combination welding method is used to put the left side plate, top plate, and right side plate into the hood assembly tooling, and the left and right side plates are positioned based on the top plate to form a skin assembly, and the weld between the top plate and the left and right side plates is welded by resistance spot welding, and the distance between the welding points is controlled to be about 50mm to ensure firmness. On the basis of the skin assembly, CO2 welding is used to assemble the front cross beam, rear cross beam, longitudinal beam, etc., the left and right front reinforcement ribs, the left and right rear reinforcement ribs, etc. This welding process ensures the appearance of the hood, reduces welding deformation, reduces the weld grinding time, and improves welding efficiency.

[0071] The above is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with this patent can make some changes or modify the technical contents suggested above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the solution of the present invention.

Claims

1. A backhoe loader hood welding process, characterized in that: The following steps are involved: S1. Use the self-positioning method to weld the bent plate, support, exhaust pipe, intake pipe and reinforcement ribs into a rear cover welding assembly; S2, using the front cover jointing tool (4) to perform jointing of the front cover welding assembly (3); S3, placing the front net cover lower mounting bracket (31), the frame mounting plate (32), the left baffle (33), the left upright (34), the front net cover upper mounting bracket (35), the crossbeam (36), the lock plate (37), the right baffle (38), and the right upright (39) into the front cover assembly tool (4) of step S2, and positioning them with the frame mounting plate (32) as a reference; S4, using a hood jointing tool (5) to perform jointing of the hood welding assembly (2); S5, placing the left side plate (21), the top plate (24), and the right side plate (27) into the hood assembly tool (5) of step S4, and positioning the other parts with the top plate (24) as a reference; S6. Test assemble the welded rear cover welding assembly, front cover welding assembly (3), and engine cover welding assembly (2).

2. The backhoe loader hood welding process according to claim 1, characterized in that: The front cover assembly tool (4) comprises a front cover assembly platform (41), a left positioning component and a right positioning component symmetrically arranged on the front cover assembly platform (41), and a positioning seat V (410) arranged at the center line of the front cover assembly platform (41); The left positioning assembly and the right positioning assembly both comprise a positioning seat I (42), a positioning seat II (44), a front cover contour positioning seat (46), a positioning seat III (47) and a positioning seat IV (48) which are arranged in sequence from the back to the front. The positioning seat I (42), the positioning seat II (44) and the positioning seat V (410) are all equipped with latches.

3. The backhoe loader hood welding process according to claim 2, characterized in that: The step S3 specifically comprises the following steps: placing the frame mounting plate (32) on the positioning seat I (42), and using the latch I (43) and the positioning seat I (42) for double positioning; placing the left column (34), the right column (39), the left baffle (33), and the right baffle (38) on the front cover contour positioning seat (46), and using the frame mounting plate (32) and the front cover contour positioning seat (46) for positioning; the positioning seat IV (48), the left column (34), and the right baffle (38) are placed on the front cover contour positioning seat (46), and using the frame mounting plate (32) and the front cover contour positioning seat (46) for positioning; ), the right column (39) positions the crossbeam (36), and the crossbeam (36), the positioning seat V (410) and the latch III (49) are used to position the lock plate (37); the left column (34), the right column (39), the positioning seat II (44) and the latch II (45) position the front net cover lower mounting bracket (31); the left column (34), the right column (39), the positioning seat III (47) and the latch II (45) position the front net cover upper mounting bracket (35).

4. The backhoe loader hood welding process according to claim 2, characterized in that: Each positioning seat is fixed on the front cover joint point platform (41) by bolts.

5. The backhoe loader hood welding process according to claim 1, characterized in that: The hood assembly tool (5) comprises a hood assembly platform (51), on which a hood profiling positioning seat (52) and four symmetrically arranged flip limit seats are installed, and symmetrically arranged flip positioning seats are installed on both sides of the hood profiling positioning seat (52); The flip limit seat is used for positioning the left side plate (21), the top plate (24) and the right side plate (27) in the left-right direction, and the flip positioning seat is used for positioning the left side plate (21), the top plate (24) and the right side plate (27) in the front-back direction.

6. The backhoe loader hood welding process according to claim 5, characterized in that: The flip positioning seat includes a positioning support, a U-shaped connecting groove is installed on the positioning support, a flip positioning plate is installed at one end of the U-shaped connecting groove through a positioning connecting pin, and the other end of the flip positioning plate is limited and fixed by a threaded limiting pin.

7. The backhoe loader hood welding process according to claim 5, characterized in that: The flip limit seat comprises a limit support, a rotating seat is rotatably mounted on the limit support, and a limit plate and a limit block assembly for cooperating with the limit rotating seat are mounted on the limit support.

8. The backhoe loader hood welding process according to claim 7, characterized in that: The limit block assembly comprises a U-shaped block installed on a limit support and a rotating shaft installed on a rotating seat, and the rotating shaft is placed in the U-shaped block.

9. The backhoe loader hood welding process according to claim 5, characterized in that: The step S5 specifically comprises the following steps: adopting an inverted placement method to position other parts with the top plate (24) as a reference; A hood profiling positioning seat (52) is used to position the top plate (24), and a positioning plate is provided in the XY direction of the hood profiling positioning seat (52) for positioning the top plate in the XY direction; the mesh plate (28) and the left side plate (21) are first welded into a left side plate assembly, and the mesh plate (28) and the right side plate (27) are first welded into a right side plate assembly; The top plate (24), the flip positioning seat I (53), the flip positioning seat II (56), the flip limiting seat I (54) and the flip limiting seat II (55) are used to position the left side plate assembly and the right side plate assembly to form a skin assembly; A rear crossbeam (211), a front crossbeam (25), a longitudinal beam (23), a left rear reinforcing rib (213), a right rear reinforcing rib (29), a left front reinforcing rib (212), and a right front reinforcing rib (26) are used to reinforce the strength to form an integral hood welding assembly (2).

10. The backhoe loader hood welding process according to claim 1, characterized in that: The hood welding assembly (2) is assembled by resistance spot welding + CO2 welding. The welds between the left side plate (21), the top plate (24) and the right side plate (27) are welded by resistance spot welding, and the distance between the welding points is controlled to be 40-60 mm.

11. The backhoe loader hood welding process according to claim 1, characterized in that: The front cover assembly tool (4) and the hood assembly tool (5) are any one of mechanical, pneumatic and hydraulic types.

Images