Combined rotary drum type part machining clamp and method

Abstract

The invention provides a combined rotary drum type part machining clamp and method. The machining clamp comprises a base, the base comprises a bottom plate, a left side plate, a right side plate and a back plate, a first installation face is formed on the surface of one side of the left side plate, a center hole is formed in the right side plate, and a second installation face inclining towards the direction of the bottom plate is arranged on the upper surface of the back plate; a support, a second pressing mechanism, a third pressing mechanism and a second supporting cylinder are arranged on the bottom plate, the support and the right side plate are arranged in a spaced mode, the second pressing mechanism and the third pressing mechanism are arranged in a spaced mode, the upper end of the support and the upper end of the right side plate are each provided with a first pressing mechanism, and a first supporting cylinder is arranged on the second mounting face; the first pressing mechanism, the second pressing mechanism, the third pressing mechanism, the first supporting cylinder and the second supporting cylinder are connected with a hydraulic unit through hydraulic pipelines. Multiple machining faces can be machined on a machine tool through one-time clamping, machining deformation is reduced, and machining efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of landing gear technology, and in particular to a combination rotary drum part machining fixture and method. Background Technology

[0002] Modular rotary drum parts are widely used in high-end equipment fields such as aerospace and engineering machinery. They are core components for realizing mechanical transmission and structural connection. Their structure includes multiple planes to be machined, and the planes must strictly meet the tolerance requirements such as parallelism and perpendicularity. Their machining directly determines the subsequent assembly accuracy and operational stability.

[0003] Existing mechanical fixtures mostly employ two modes: single-station single-plane and multi-station multi-plane. The single-station single-plane mode, designed for diverse rotary parts, requires multiple clamping operations to complete the machining of all planes, resulting in cumbersome operation and a tendency to accumulate positioning errors, making it difficult to guarantee accuracy. While the multi-station multi-plane mode addresses the problems of the single-station single-plane mode, it suffers from low versatility and poor adaptability to different part specifications, requiring a dedicated fixture for each part type, leading to higher costs. Furthermore, both types of fixtures typically rely on manually adjustable mechanical clamping forces, resulting in uneven force distribution and a tendency for elastic deformation of parts. This is especially problematic for thin-walled parts, requiring additional machining processes, significantly reducing production efficiency and increasing manufacturing costs.

[0004] As the high-end equipment manufacturing industry continues to demand higher processing precision, efficiency, and cost control, existing clamping methods are no longer adequate. Summary of the Invention

[0005] The purpose of this invention is to provide a combined rotary drum part machining fixture and method that can perform multi-plane synchronous machining in one clamping.

[0006] The technical solution of the present invention is: a combined rotary drum part processing fixture, including a base, the base including a bottom plate, a left side plate connected to one end of the bottom plate, a right side plate connected to the other end of the bottom plate, and a back plate connected between the left side plate, the right side plate and the bottom plate, the side surface of the left side plate away from the right side plate forming a first mounting surface for mounting connecting components, the right side plate having a center hole, and the upper surface of the back plate having a second mounting surface inclined towards the bottom plate; The base plate is provided with a support, a second pressing mechanism, a third pressing mechanism, and a second support cylinder. The support is spaced apart from the right side plate, and the second pressing mechanism is spaced apart from the third pressing mechanism. The upper end of the support and the upper end of the right side plate are respectively provided with a first pressing mechanism. The second mounting surface is provided with a first support cylinder, and the second support cylinder is located inside the second pressing mechanism and the third pressing mechanism. The first pressing mechanism, the second pressing mechanism, the third pressing mechanism, the first support cylinder, and the second support cylinder are connected to the hydraulic unit through hydraulic pipelines.

[0007] Preferably, the movement direction of the first support cylinder is opposite to the movement direction of the first pressing mechanism, the movement directions of the two first support cylinders are inclined and intersect at a point, and the movement of the second pressing mechanism and the third pressing mechanism is vertically downward.

[0008] Preferably, the first pressing mechanism includes a movable pressure plate, a single-acting angle cylinder, and a first base. The single-acting angle cylinder is mounted on the first base, and the telescopic rod of the single-acting angle cylinder is connected to the movable pressure plate. The first base is mounted on the right side plate or support.

[0009] Preferably, the second pressing mechanism includes a first floating pressure plate, a positioning block, a first lever cylinder, and a positioning seat. The first lever cylinder is mounted on the base plate via the positioning seat. The telescopic rod of the first lever cylinder is connected to the first floating pressure plate. The positioning block is located below the first floating pressure plate.

[0010] Preferably, the first floating pressure plate is provided with two horizontally extending support arms, the positioning block is provided with support blocks corresponding to the support arms one by one, and the support blocks are provided with vertically extending V-shaped grooves.

[0011] Preferably, the third pressing mechanism includes a second floating pressure plate, a movable support, a second lever cylinder, and a pressing seat. The second lever cylinder is mounted on the base via the pressing seat. The telescopic rod of the second lever cylinder is connected to the second floating pressure plate. The movable support is located below the second floating pressure plate.

[0012] Preferably, the movable support is threadedly connected to the clamping seat.

[0013] Preferably, the base plate is also provided with a sequence valve, an accumulator, and a pressure holding valve, which are connected to the hydraulic pipeline.

[0014] Preferably, the hydraulic unit includes a BA valve, a pneumatic valve, a manual directional valve, an AB pump, an air regulator, a first oil circuit, a second oil circuit, and a third oil circuit. One end of the third oil circuit is an air supply port. The air regulator and the AB pump are connected to the third oil circuit. The other end of the third oil circuit is connected to the first and second oil circuits. The first oil circuit is connected to the second and third pressing mechanisms respectively through a BA valve. The second oil circuit is connected to the first and second support cylinders through another BA valve. The BA valve, pneumatic valve, manual directional valve, and air regulator are connected in sequence.

[0015] The present invention also provides a machining method using the above-mentioned combined rotary drum part machining fixture, comprising: Place one side of the rotary drum part on the second clamping mechanism, and adjust the rotary drum part to the initial horizontal position through the third clamping mechanism so that the left and right ends of the rotary drum part are controlled on the same horizontal line. Start the hydraulic unit, first drive the second and third clamping mechanisms to clamp and fix the rotary drum-like parts, then drive the first and second support cylinders to extend and abut against the bottom and rear side of the rotary drum-like parts respectively, limiting the horizontal and vertical movement of the rotary drum-like parts, and then drive the first clamping mechanism to clamp the rotary drum-like parts. Install the first mounting surface onto the machine tool's connecting assembly, and press the machine tool's center into the center hole; complete the clamping of the rotary drum-type parts.

[0016] Compared with related technologies, the beneficial effects of the present invention are as follows: I. The combination of the clamping mechanism and the support cylinder designed in this invention can clamp different types of rotary drum parts, has good versatility, and is better applicable to the processing of most thin-walled cylindrical combination parts. Second, this invention employs hydraulic drive, enabling rapid and accurate clamping during setup. Operation is simple and convenient, minimizing human intervention throughout the process and achieving adaptive force balance clamping. Compared to existing fixtures, it significantly improves clamping and machining efficiency, and significantly alleviates the problem of deformation before and after machining of cylindrical (especially thin-walled) parts caused by unbalanced clamping forces. Third, the structural design, oil circuit design, and pressure holding valve setting of the hydraulic unit of the present invention enable it to have excellent pressure holding performance, reliably maintain pressure after power failure, continuously maintain clamping accuracy, ensure that it is not limited by the space and position of the fixture when processing different surfaces and orientations, and always maintain a stable clamping state when changing orientations, reducing the number of clamping times and significantly improving processing efficiency. Fourth, the fixture of the present invention can be applied to vertical machining centers, horizontal machining centers, turning-milling composite machining centers, etc. equipped with an A-axis, and can be widely used and promoted. Fifth, this invention offers convenient and quick clamping, with the advantage of adaptive force balance. It provides uniform and reliable clamping force around the perimeter of modular rotary parts, enabling multiple machining surfaces to be processed in a single clamping operation on a machine tool, reducing machining deformation and improving machining efficiency. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the combined rotary drum part processing fixture provided by the present invention; Figure 2 A three-dimensional structural diagram of the mounting and connecting assembly and the top of the combined rotary drum part processing fixture provided by the present invention; Figure 3 for Figure 2 A front view of a rotating drum-like part installed in the center; Figure 4 This is a hydraulic schematic diagram; Figure 5 This is a structural diagram of the hydraulic unit.

[0018] In the attached diagram: 1. Base; 101. Base plate; 102. Left side plate; 121. First mounting surface; 103. Right side plate; 131. Center hole; 104. Back plate; 141. Second mounting surface; 105. Support; 2. First clamping mechanism; 21. Movable pressure plate; 22. Single-acting corner cylinder; 23. First base; 3. First support cylinder; 4. Second clamping mechanism; 41. First floating pressure plate; 411. Support arm; 42. Positioning block; 421. Support block; 422. V-groove; 43. First lever cylinder; 44. Positioning seat; 5. Third clamping mechanism; 51. Second floating pressure plate; 52. Movable support; 53. 54. Second lever cylinder; 6. Pressing seat; 7. Second support cylinder; 8. Second base; 9. First sequence valve; 10. Pressure gauge; 11. Accumulator; 12. Pressure holding valve; 13. End face limit component; 14. Quick connector; 15. Locking bolt; 16. Hydraulic unit; 161. BA valve; 162. Pneumatic valve; 163. Manual directional valve; 164. Hydraulic gauge; 165. AB pump; 166. Air pressure gauge; 167. First oil circuit; 168. Second oil circuit; 169. Air conditioner; 160. Third oil circuit; 17. Center; 20. Connecting assembly; 100. Rotary drum parts. Detailed Implementation

[0019] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other. For ease of description, the terms "upper," "lower," "left," and "right" used below only indicate that they correspond to the upper, lower, left, and right directions in the accompanying drawings and do not limit the structure.

[0020] like Figure 1 , Figure 2 As shown, the combined rotary drum part processing fixture provided in this embodiment includes a base 1, a first clamping mechanism 2, a first support cylinder 3, a second clamping mechanism 4, a third clamping mechanism 5, a second support cylinder 6, a first sequence valve 8, a second sequence valve 9, a pressure gauge 10, an accumulator 11, a pressure holding valve 12, an end face limiting component 13, a locking bolt 15, and a hydraulic unit 16.

[0021] The base 1 includes a base plate 101, a left side plate 102 connected to one end of the base plate 101, a right side plate 103 connected to the other end of the base plate 101, and a back plate 104 connecting the left side plate 102, the right side plate 103, and the base plate 101. The side surface of the left side plate 102 away from the right side plate 103 forms a first mounting surface 121 for mounting the connecting assembly 20. The right side plate 103 has a top hole 131. The upper surface of the back plate 104 has a second mounting surface 141 inclined towards the base plate 101.

[0022] The base plate 101 is provided with a support 105, a second pressing mechanism 4, a third pressing mechanism 5, and a second support cylinder 6. The support 105 and the second pressing mechanism 4 are located near the inner sidewall of the left side plate 102. The support 105 is n-shaped, and the second pressing mechanism 4 is placed inside the n-shaped support 105, making the structure more compact.

[0023] The upper end of the support 105 and the upper end of the right side plate 103 are respectively provided with a first pressing mechanism 2. A first support cylinder 3 is provided on the second mounting surface 141. The second support cylinder 6 is respectively disposed inside the second pressing mechanism 4 and the third pressing mechanism 5. The movement direction of the first support cylinder 3 is opposite to the movement direction of the first pressing mechanism 2. The movement directions of the two first support cylinders 3 are inclined and intersect at a point. The movement of the second pressing mechanism 4 and the third pressing mechanism 5 is vertically downward.

[0024] The first pressing mechanism 2 includes a movable pressure plate 21, a single-acting angle cylinder 22 and a first base 23. The single-acting angle cylinder 22 is installed on the first base 23, and the telescopic rod of the single-acting angle cylinder 22 is connected to the movable pressure plate 21. The first base 23 is installed on the right side plate 103 or the support 105.

[0025] The second pressing mechanism 4 includes a first floating pressure plate 41, a positioning block 42, a first lever cylinder 43, and a positioning seat 44. The first lever cylinder 43 is mounted on the base plate 101 via the positioning seat 44. The telescopic rod of the first lever cylinder 43 is connected to the first floating pressure plate 41. The positioning block 42 is located below the first floating pressure plate 41 and is mounted on the positioning seat 44.

[0026] In order to better clamp rotary parts, especially to avoid vibration during the processing of thin-walled parts, the first floating pressure plate 41 is provided with two horizontally extending support arms 411, and the positioning block 42 is provided with support blocks 421 corresponding to the support arms 411. The support blocks 421 are provided with vertically extending V-shaped grooves 422.

[0027] The third clamping mechanism 5 includes a second floating pressure plate 51, a movable support 52, a second lever cylinder 53, and a clamping seat 54. The second lever cylinder 53 is mounted on the base plate 101 via the clamping seat 54. The telescopic rod of the second lever cylinder 53 is connected to the second floating pressure plate 51. The movable support 52 is located below the second floating pressure plate 51. The second floating pressure plate 51 is a lever structure. The movable support 52 is threaded onto the clamping seat 54, allowing for convenient and quick adjustment of its height, and enabling preliminary adjustment of the position of the rotary drum part 100 to a horizontal position.

[0028] A second base 7 is fitted to the inner wall of the positioning seat 44, and another second base 7 is fitted to the inner wall of the clamping seat 54. Both second bases 7 have inclined surfaces on their adjacent sides, and second support cylinders 6 are mounted on these inclined surfaces, so that the extensions of the movement directions of the two second support cylinders 6 intersect at a point that coincides with the axis of rotation of the rotary drum part 100 (e.g., ...). Figure 3 (As shown).

[0029] The main function of the movable pressure plate 21 is to provide downward clamping force to the rotary drum part 100, forming a force balance with the four support cylinders. The four support cylinders, in conjunction with the first floating pressure plate 41 and the second floating pressure plate 51, clamp both ends of the rotary drum part 100 and then provide adaptive balancing forces at four points. For example, when the floating pressure plate presses downward, the four support cylinders adaptively balance and clamp the workpiece (e.g., ...). Figure 3 (As shown).

[0030] The back plate 104 is equipped with a forward-extending horizontal end face limiting member 13, which is a bolt that is threadedly connected to the back plate 104 and locked with a nut. The left side plate 102 is connected to the machine tool's connecting assembly 20 by locking bolts 15.

[0031] The pressure-holding valve 12, accumulator 11, pressure gauge 10, second sequence valve 9, and first sequence valve 8 are located at corresponding positions on the base plate 101. Figure 4 As shown, the first lever cylinder 43 and the second lever cylinder 53 are connected in parallel, the two first support cylinders 3 and the two second support cylinders 6 are connected in parallel, and the two single-acting rotary cylinders 22 are connected in parallel. A first sequence valve 8 connects the parallel first lever cylinder 43 and the second lever cylinder 53 to the parallel first support cylinders 3 and the second support cylinders 6. A second sequence valve 9 connects the parallel first support cylinders 3 and the second support cylinders 6 to the parallel two single-acting rotary cylinders 22. After all the parallel oil circuits are combined, they are sequentially connected to a pressure gauge 10, an accumulator 11, a pressure-holding valve 12, and a quick-connect coupling 14, and then connected to the hydraulic unit 16.

[0032] The piston rods of the first support cylinder 3 and the second support cylinder 6 are connected to specially made support heads by means of threaded connection. The support heads can be L-shaped, R-shaped or M6 type, etc., and can be replaced to meet the surface support of different parts.

[0033] like Figure 5 As shown, the hydraulic unit 16 includes a BA valve 161, a pneumatic valve 162, a manual directional valve 163, an AB pump 165, an air regulator 169, a first oil passage 167, a second oil passage 168, and a third oil passage 160. One end of the third oil passage 160 is an air supply port. The air regulator 169 and the AB pump 165 are connected to the third oil passage 160. The other end of the third oil passage 160 is connected to both the first oil passage 167 and the second oil passage 168, and a hydraulic gauge 164 is installed thereon. The first oil passage 167 is connected to the second pressing mechanism 4 and the third pressing mechanism 5 respectively through a BA valve 161. The second oil passage 168 is connected to the first support cylinder 3 and the second support cylinder 6 through another BA valve 161. The BA valve 161, the pneumatic valve 162, the manual directional valve 163, and the air regulator 169 are connected in sequence. A pressure gauge 166 is installed on the air regulator 169. The third oil circuit 160 and AB pump 165 are connected to the return oil tank via pipelines, and the oil tank is equipped with an oil drain hole. BA valve 161 is connected to the oil tank via the return oil circuit. The manual directional valve 163 has three positions: A / B oil port cut-off oil pressure, A oil port supply oil pressure, and B oil port supply oil pressure. The default state of each cylinder is released; oil is introduced into the clamp by rotating the manual directional valve 163. The hydraulic system transmits pressure to the hydraulic circuit through the pressure holding valve 12, and adjusts the pressure sequence by setting the first sequence valve 8 and the second sequence valve 9, thereby controlling the operation of the lever cylinder, support cylinder, and single-acting rotary cylinder sequentially.

[0034] like Figure 4 As shown, the first lever cylinder 43 and the second lever cylinder 53 are clamping parts A1 and A2, respectively. The two first support cylinders 3 and the two second support cylinders 6 are contacting parts B1, B2, B3, and B4, respectively, locking the piston rod. The two single-acting rotary cylinders 22 are auxiliary clamping parts C1 and C2.

[0035] like Figure 3 , Figure 4 and Figure 5 As shown, the present invention also provides a machining method using the above-mentioned combined rotary drum part machining fixture, comprising: S1, Clamping the workpiece: S1.1, place one side of the rotary drum part on the V-groove 422 of the positioning block 42 of the second pressing mechanism 4, and adjust the height of the movable support 52 to place the rotary drum part in the initial horizontal position, so that the left and right ends of the rotary drum part 100 are controlled on the same horizontal line. S1.2, connect the oil circuit on the fixture to the hydraulic unit 16 through the quick-connect coupling 14; S1.3, start the hydraulic system, manually rotate the manual directional valve 163 to the position of supplying hydraulic pressure through oil hole A, the first lever cylinder 43 and the second lever cylinder 53 are filled with oil, driving the first floating pressure plate 41 and the second floating pressure plate 51 to press down the rotating cylinder part 100 for initial fixation. S1.4, then drive the first support cylinder 3 and the second support cylinder 6 to extend and abut against the bottom and rear side of the rotary drum part 100 respectively, limiting the horizontal and vertical movement of the rotary drum part and realizing adaptive force balance support. S1.5, then drive the single-acting rotary cylinder 22 to press the rotary drum part 100. At this time, the end face limiting part 13 contacts the back of the rotary drum part 100, providing a balanced support force.

[0036] S2, Machining S2.1, manually operate the manual reversing valve 163 to set it to the position of cutting off oil pressure at the A / B oil port, cut off the oil supply, disassemble the quick connector 14, and the clamp maintains pressure; S2.2, hoist the fixture onto the machine tool, the first mounting surface 121 is connected to the connecting assembly 20 by the locking bolt 15, start the center 17 on the machine tool so that it abuts against the center hole 131, and at the same time adjust the position of the fixture so that the rotary drum part 100 is in the optimal processing position. S2.3 Start the machine tool to process the part. After processing one side, adjust the position until all processed surfaces are completed.

[0037] S3, Off-line parts S3.1, Remove the fixture and the machined rotary drum part 100 from the machine tool; S3.2, Connect the oil circuit on the fixture to the hydraulic unit 16 via quick-connect coupling 14; S3.3, manually operate the manual directional valve 163 to the position where oil pressure is supplied through port B, oil enters the fixture, the extension rods of each cylinder retract, and the parts are released. Machining is complete.

[0038] The manual reversing valve 163 is a knob type, which can switch between three gears by rotating counterclockwise and clockwise.

[0039] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A combined rotary drum-type parts machining fixture, comprising a base (1), characterized in that, The base (1) includes a base plate (101), a left side plate (102) connected to one end of the base plate (101), a right side plate (103) connected to the other end of the base plate (101), and a back plate (104) connected between the left side plate (102), the right side plate (103) and the base plate (101). The side surface of the left side plate (102) away from the right side plate (103) forms a first mounting surface (121) for mounting the connecting assembly (20). The right side plate (103) is provided with a top hole (131). The upper surface of the back plate (104) is provided with a second mounting surface (141) inclined towards the base plate (101). The base plate (101) is provided with a support (105), a second pressing mechanism (4), a third pressing mechanism (5), and a second support cylinder (6). The support (105) is spaced apart from the right side plate (103). The second pressing mechanism (4) and the third pressing mechanism (5) are spaced apart. The upper end of the support (105) and the upper end of the right side plate (103) are respectively provided with a first pressing mechanism (2). The second mounting surface (141) is provided with a first support cylinder (3). The second support cylinder (6) is located inside the second pressing mechanism (4) and the third pressing mechanism (5). The first pressing mechanism (2), the second pressing mechanism (4), the third pressing mechanism (5), the first support cylinder (3), and the second support cylinder (6) are connected to the hydraulic unit (16) through hydraulic pipelines.

2. The combined rotary drum-type parts machining fixture according to claim 1, characterized in that, The movement direction of the first support cylinder (3) is opposite to the movement direction of the first pressing mechanism (2). The movement directions of the two first support cylinders (3) are inclined and intersect at a point. The movement of the second pressing mechanism (4) and the third pressing mechanism (5) is vertically downward.

3. The combined rotary drum-type parts machining fixture according to claim 1, characterized in that, The first pressing mechanism (2) includes a movable pressure plate (21), a single-acting angle cylinder (22) and a first base (23). The single-acting angle cylinder (22) is installed on the first base (23), and the telescopic rod of the single-acting angle cylinder (22) is connected to the movable pressure plate (21). The first base (23) is installed on the right side plate (103) or the support (105).

4. The combined rotary drum-type parts machining fixture according to claim 1, characterized in that, The second pressing mechanism (4) includes a first floating pressure plate (41), a positioning block (42), a first lever cylinder (43) and a positioning seat (44). The first lever cylinder (43) is mounted on the base plate (101) via the positioning seat (44). The telescopic rod of the first lever cylinder (43) is connected to the first floating pressure plate (41). The positioning block (42) is located below the first floating pressure plate (41).

5. The combined rotary drum-type parts machining fixture according to claim 4, characterized in that, The first floating pressure plate (41) is provided with two horizontally extending support arms (411), the positioning block (42) is provided with support blocks (421) corresponding to the support arms (411), and the support blocks (421) are provided with vertically extending V-shaped grooves (422).

6. The combined rotary drum-type parts machining fixture according to claim 1, characterized in that, The third pressing mechanism (5) includes a second floating pressure plate (51), a movable support (52), a second lever cylinder (53) and a pressing seat (54). The second lever cylinder (53) is mounted on the base (11) via the pressing seat (54). The telescopic rod of the second lever cylinder (53) is connected to the second floating pressure plate (51). The movable support (52) is located below the second floating pressure plate (51).

7. The combined rotary drum-type parts machining fixture according to claim 6, characterized in that, The movable support (52) is threaded onto the clamping seat (54).

8. The combined rotary drum-type parts machining fixture according to claim 1, characterized in that, The base plate (101) is also provided with a sequence valve, an accumulator (11) and a pressure holding valve (12), which are connected to the hydraulic pipeline.

9. The combined rotary drum-type parts machining fixture according to claim 1, characterized in that, The hydraulic unit (16) includes a BA valve (161), a pneumatic valve (162), a manual directional valve (163), an AB pump (165), an air conditioner (169), a first oil circuit (167), a second oil circuit (168), and a third oil circuit (160). One end of the third oil circuit (160) is an air supply port. The air conditioner (169) and the AB pump (165) are connected to the third oil circuit (160). The other end of the third oil circuit (160) is connected to the air supply port. It is connected to the first oil circuit (167) and the second oil circuit (168). The first oil circuit (167) is connected to the second pressing mechanism (4) and the third pressing mechanism (5) respectively through a BA valve (161). The second oil circuit (168) is connected to the first support cylinder (3) and the second support cylinder (6) through another BA valve (161). The BA valve (161), the pneumatic valve (162), the manual reversing valve (163) and the air conditioner (169) are connected in sequence.

10. A machining method using the combined rotary drum-type part machining fixture according to any one of claims 1-9, characterized in that, include: Place one side of the rotating drum part on the second clamping mechanism (4), and adjust the rotating drum part to the initial horizontal position through the third clamping mechanism (5) so that the left and right ends of the rotating drum part are controlled on the same horizontal line. Start the hydraulic unit (16), first drive the second clamping mechanism (4) and the third clamping mechanism (5) to clamp and fix the rotating drum part, then drive the first support cylinder (3) and the second support cylinder (6) to extend and abut against the bottom and rear side of the rotating drum part respectively, limiting the horizontal and vertical movement of the rotating drum part, and then drive the first clamping mechanism (2) to clamp the rotating drum part. Install the first mounting surface (121) onto the connecting assembly (20) of the machine tool, and press the center (17) of the machine tool into the center hole (131); complete the clamping of the rotary drum part.

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