Side face machining clamp of hydraulic rear cover product

Abstract

The invention relates to the technical field of automobile part machining, and discloses a hydraulic rear cover product side face machining clamp which comprises a machining cylinder provided with at least two sets of machining faces and further comprises a first mounting plate fixed to one set of machining faces of the machining cylinder and a second mounting plate fixed to the other set of machining faces of the machining cylinder. At least two groups of first positioning parts are arranged on the end surface of the first mounting plate; the second mounting plate is fixed to one set of machining faces of the machining cylinder, and at least two sets of second positioning parts are arranged on the end face of the second mounting plate; through the arrangement of the first positioning part and the second positioning part, workpieces of the same type, different machining faces and different angles are clamped and fixed on the machining barrel, the repeated operation time of clamping, positioning and disassembling is shortened, the equipment and space utilization rate is optimized, multiple purposes are achieved through one machine, rapid remodeling is achieved, and the machining efficiency is greatly improved.

Description

Technical Field

[0001] This invention relates to the field of automotive parts processing technology, specifically to a side processing fixture for a hydraulic rear cover product. Background Technology

[0002] In the automotive parts manufacturing industry, the hydraulic cylinder rear cover is a key functional component. Its machining accuracy and production efficiency directly affect the quality and production cost of the assembly. This type of workpiece usually has a near-cylindrical main structure and features such as multiple radial holes, grooves or threads distributed on its cylindrical surface.

[0003] Currently, in mass production, the following technical problems are common in the processing of automotive hydraulic cylinder rear cover workpieces: different fixtures need to be designed for processing different parts of the hydraulic cylinder rear cover, and in the production process, the fixtures need to be changed frequently to achieve the required clamping effect, which leads to extended machine tool downtime and reduced processing efficiency; therefore, a side processing fixture for hydraulic rear cover products is proposed. Summary of the Invention

[0004] This invention provides a side processing fixture for hydraulic back cover products. Through the setting of a first positioning part and a second positioning part, it can clamp and fix different types of workpieces, as well as workpieces of the same type but different angles, on the processing cylinder. This reduces the repetitive operation time of clamping, positioning, and disassembly, optimizes equipment and space utilization, realizes multi-purpose use of one machine, and enables rapid changeover. It significantly improves processing efficiency and solves the problem mentioned in the background art, which is that frequent changes of fixtures and adjustments of fixture angles lead to prolonged machine tool downtime and reduced processing efficiency.

[0005] This invention provides the following technical solution: A side-processing fixture for a hydraulic rear cover product includes a processing cylinder with at least two sets of processing surfaces, and further includes: a first mounting plate fixed to one set of processing surfaces of the processing cylinder, the first mounting plate having at least two sets of first positioning parts on its end face, the first positioning parts being used to abut against the side wall of a workpiece from multiple directions to achieve positioning and clamping of the workpiece; and a second mounting plate fixed to one set of processing surfaces of the processing cylinder, the second mounting plate having at least two sets of second positioning parts on its end face, the second positioning parts being used to abut against the front and rear ends of a workpiece to achieve positioning and clamping of the workpiece.

[0006] As a preferred embodiment of the present invention, the first positioning part includes positioning components. Four sets of positioning components are provided and symmetrically fixed on the end face of the first mounting plate. The four sets of positioning components form a positioning station for placing the workpiece. The ends of the four sets of positioning components are respectively attached to the four corner walls of the workpiece. A first abutment and a second abutment are respectively fixedly connected to the end face of the first mounting plate located in the positioning station. Two sets of the first abutment and the second abutment are symmetrically arranged along the central horizontal axis of the positioning station. The distance from the second abutment to the central horizontal axis of the positioning station is greater than the distance from the first abutment to the central horizontal axis of the positioning station. When the workpiece is installed in the positioning station, the first abutment is attached to the first boss of the workpiece, and the second abutment is attached to the second boss of the workpiece.

[0007] As a preferred embodiment of the present invention, a first cylinder is fixedly connected to the end face of the first mounting plate located above the positioning station, and an upper positioning block is fixedly connected to the telescopic end of the first cylinder. A lower positioning block is fixedly connected to the end face of the first mounting plate located below the positioning station. In the clamping state, the distance from the protrusion of the upper positioning block and the lower positioning block to the horizontal axis of the center of the positioning station is the same.

[0008] As a preferred embodiment of the present invention, a side positioning block is fixedly connected to the first mounting plate, a positioning post is fixedly connected to the first mounting plate, and a clamping rod is installed on the positioning post. The side positioning block and the positioning post are respectively located on both sides of the positioning station, and the clamping rod is aligned with the protrusion of the side positioning block.

[0009] As a preferred embodiment of the present invention, the point clamping rod is threadedly connected to the positioning column. In the clamping state, the end of the point clamping rod and the protrusion of the side positioning block are at the same distance from the vertical axis of the positioning station center, and respectively fit against the two side walls of the workpiece.

[0010] As a preferred embodiment of the present invention, the second positioning part includes a positioning disk, which is fixedly connected to the end face of the second mounting plate. A heat dissipation groove is provided on the end face of the positioning disk, and a positioning round pin and an anti-misalignment pin are fixedly fixed in the heat dissipation groove. A positioning diamond pin is fixedly connected to the end face of the positioning disk. When the second workpiece is installed on the positioning disk, the positioning round pin is inserted into the circular slot of the second workpiece, the anti-misalignment pin is inserted into the anti-misalignment hole of the second workpiece, and the positioning diamond pin is inserted into the mounting hole of the second workpiece.

[0011] As a preferred embodiment of the present invention, a first clamping portion and a second clamping portion are respectively provided on the end faces of the second mounting plate located on both sides of the positioning disk.

[0012] As a preferred embodiment of the present invention, the first clamping part includes a set of rotary pressing cylinders, and the second clamping part includes at least one set of rotary pressing cylinders. The rotary pressing cylinders are fixed on the end face of the second mounting plate, and the telescopic end of the rotary pressing cylinders is fixedly connected to a clamping hook.

[0013] As a preferred embodiment of the present invention, a positioning pin is fixed on the end face of the second mounting plate, which is adapted to the number of rotary pressing cylinders. When the rotary pressing cylinder rotates, the clamping hook will fit with its corresponding positioning pin.

[0014] As a preferred embodiment of the present invention, anti-slip pads are provided on the first abutment, the second abutment, the protrusion of the upper positioning block, the protrusion of the lower positioning block, the protrusion of the side positioning block, and the contact surface between the clamping rod and the workpiece.

[0015] Compared with the prior art, the present invention provides a side processing fixture for hydraulic back cover products, which has the following beneficial effects: The side processing fixture of this hydraulic rear cover product achieves pre-positioning of workpiece one through the setting of positioning components, first abutment rod and second abutment rod. It achieves horizontal clamping in conjunction with point clamping rod and side positioning block, and achieves vertical clamping in conjunction with first cylinder, upper positioning block and lower positioning block. In this way, it completes multi-angle clamping of workpiece one and effectively improves the stability of workpiece one during processing.

[0016] The side machining fixture of this hydraulic rear cover product uses positioning round pins, positioning diamond pins and anti-misalignment pins set on the positioning plate to achieve precise positioning of workpiece two, ensuring machining accuracy. In addition, with the setting of multiple sets of rotary pressing cylinders, clamping hooks and positioning pins, the end face of workpiece two is squeezed and clamped from multiple positions, achieving effective clamping of workpiece two and ensuring the stability of workpiece two during the machining process.

[0017] The present invention, through the setting of the first positioning part and the second positioning part, realizes the clamping and fixing of workpieces of the same type but different processing surfaces and different angles on the processing cylinder, reduces the repetitive operation time of clamping, positioning and disassembly, optimizes the utilization of equipment and space, realizes multi-purpose machine, quick changeover, and greatly improves processing efficiency. Attached Figure Description

[0018] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, the elements or parts are not necessarily drawn to actual scale.

[0019] Figure 1 This is a first-view perspective stereoscopic diagram of the present invention; Figure 2This is a second-view perspective stereoscopic diagram of the present invention; Figure 3 This is a schematic diagram of the structure of the first positioning part of the present invention; Figure 4 This is a schematic diagram of the structure of the second positioning part of the present invention. Figure 1 ; Figure 5 This is a schematic diagram of the structure of the second positioning part of the present invention. Figure 2 ; Figure 6 This is a schematic diagram of the workpiece structure from a first-view perspective according to the present invention; Figure 7 This is a schematic diagram of the workpiece structure from a second perspective according to the present invention; Figure 8 This is a schematic diagram of the first-view structure of workpiece two of the present invention; Figure 9 This is a schematic diagram of the second view structure of the workpiece 2 of the present invention.

[0020] In the diagram: 1. Machining cylinder; 2. First mounting plate; 3. Second mounting plate; 4. Workpiece 1; 41. Corner wall; 42. First boss; 43. Second boss; 5. Workpiece 2; 51. Circular slot; 52. Mounting hole; 53. Anti-misalignment hole; 6. Positioning component; 61. First abutment rod; 62. Second abutment rod; 63. First cylinder; 631. Upper positioning block; 64. Lower positioning block; 65. Side positioning block; 66. Positioning pin; 661. Point clamping rod; 7. Positioning disc; 71. Heat dissipation groove; 72. Positioning round pin; 73. Anti-misalignment pin; 74. Positioning diamond pin; 75. Rotary pressing cylinder; 751. Clamping hook; 76. Positioning pin. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Example 1: Reference Figures 1-9A side processing fixture for a hydraulic rear cover product includes a processing cylinder 1, which has at least two sets of processing surfaces, and further includes: a first mounting plate 2, which is fixed to one set of processing surfaces of the processing cylinder 1, and has at least two sets of first positioning parts on its end face, which are used to press against the side wall of workpiece 4 from multiple directions to achieve positioning and clamping of workpiece 4; and a second mounting plate 3, which is fixed to one set of processing surfaces of the processing cylinder 1, and has at least two sets of second positioning parts on its end face, which are used to press against the front and rear ends of workpiece 5 to achieve positioning and clamping of workpiece 5.

[0023] Reference Figures 1-3 , Figure 6 and Figure 7 The first positioning part includes positioning components 6, of which four sets are symmetrically fixed to the end face of the first mounting plate 2. The four sets of positioning components 6 form a positioning station for placing workpiece 4. The ends of the four sets of positioning components 6 are respectively attached to the four corner walls 41 of workpiece 4. The first abutment 61 and the second abutment 62 are respectively fixedly connected to the end face of the first mounting plate 2 located in the positioning station. The first abutment 61 and the second abutment 62 are symmetrically arranged in two sets along the central horizontal axis of the positioning station, and the distance from the second abutment 62 to the central horizontal axis of the positioning station is greater than the distance from the first abutment 61 to the central horizontal axis of the positioning station. When workpiece 4 is installed in the positioning station, the first abutment 61 is attached to the first boss 42 of workpiece 4, and the second abutment 62 is attached to the second boss 43 of workpiece 4. The end face of the first mounting plate 2 above the positioning station A first cylinder 63 is fixedly connected, and an upper positioning block 631 is fixedly connected to the telescopic end of the first cylinder 63. A lower positioning block 64 is fixedly connected to the end face of the first mounting plate 2 located below the positioning station. In the clamping state, the distance from the protrusions of the upper positioning block 631 and the lower positioning block 64 to the horizontal axis of the center of the positioning station is the same. A side positioning block 65 is fixedly connected to the first mounting plate 2, and a positioning post 66 is fixedly connected to the first mounting plate 2. A clamping rod 661 is installed on the positioning post 66 and threadedly connected to the positioning post 66. The side positioning block 65 and the positioning post 66 are located on both sides of the positioning station, and the protrusions of the clamping rod 661 and the side positioning block 65 are aligned. In the clamping state, the distance from the end of the clamping rod 661 to the vertical axis of the center of the positioning station is the same as the distance from the protrusion of the side positioning block 65, and they are respectively in contact with the two side walls of the workpiece 4.

[0024] With the above structure, when workpiece 4 needs to be processed, the corner walls 41 of workpiece 4 are first inserted into the positioning station along the four sets of positioning parts 6. At this time, the corner walls 41 are in contact with the ends of the positioning parts 6. Then, workpiece 4 is further inserted into the positioning station. Finally, the first boss 42 is in contact with the first abutment 61, and the second boss 43 is in contact with the second abutment 62, thereby achieving the pre-positioning of workpiece 4. Next, the clamping rod 661 is rotated to move along the positioning post 66 towards the side wall of workpiece 4. With the cooperation of the protrusion of the side positioning block 65, workpiece 4 is clamped and fixed in the horizontal direction. Then, the first cylinder 63 pushes the upper positioning block 631 down and with the cooperation of the protrusion of the lower positioning block 64, workpiece 4 is clamped and fixed in the vertical direction. This achieves multi-angle clamping of workpiece 4 and effectively improves the stability of workpiece 4 during processing.

[0025] In addition, anti-slip pads are provided on the protrusions of the first abutment 61, the second abutment 62, the upper positioning block 631, the lower positioning block 64, the side positioning block 65, and the contact surface between the clamping rod 661 and the workpiece 4. By setting the anti-slip pads, the clamping wear of the workpiece 4 can be reduced firstly, and the friction force generated on the workpiece 4 can be increased secondly, so as to avoid the displacement of the workpiece 4 in subsequent processing, and further ensure the stability of the workpiece 4 in processing.

[0026] Reference Figure 1 , Figure 2 , Figure 4 , Figure 8 and Figure 9The second positioning part includes a positioning disk 7, which is fixedly connected to the end face of the second mounting plate 3. A heat dissipation groove 71 is provided on the end face of the positioning disk 7 to dissipate debris and heat generated during drilling. The connection between the midpoints of the two ends of the heat dissipation groove 71 is parallel to the vertical edge of the second mounting plate 3. Positioning round pins 72 and anti-misalignment pins 73 are fixedly fixed inside the heat dissipation groove 71. A positioning diamond pin 74 is fixedly connected to the end face of the positioning disk 7. When the workpiece 5 is installed on the positioning disk 7, the positioning round pin 72 engages with the circular slot 51 of the workpiece 5, and the anti-misalignment pin 73 engages with the anti-misalignment hole 53 of the workpiece 5. The positioning diamond pin 74 is also fixed to the workpiece 5. Hole 52 is inserted into the hole; a first clamping part and a second clamping part are respectively provided on the end face of the second mounting plate 3 located on the left and right sides of the positioning plate 7; the first clamping part includes a set of rotary pressing cylinders 75, and the second clamping part includes two sets of rotary pressing cylinders 75. The specific model of the rotary pressing cylinders 75 can be selected from the ACKR series. The rotary pressing cylinders 75 are fixed on the end face of the second mounting plate 3, and the telescopic end of the rotary pressing cylinders 75 is fixedly connected to the clamping hooks 751; the end face of the second mounting plate 3 is fixed with positioning pins 76 that match the number of rotary pressing cylinders 75. When the rotary pressing cylinders 75 rotate, the clamping hooks 751 will fit with their corresponding positioning pins 76.

[0027] Reference Figure 4 In the first clamping part, when the clamping hook 751 rotates and engages with its corresponding positioning pin 76, the clamping hook 751 is perpendicular to the center line connecting the two ports of the heat sink 71. When the two sets of clamping hooks 751 of the second clamping part rotate and engage with their corresponding positioning pins 76, the two sets of clamping hooks 751 are respectively at a preset angle to the center line connecting the two ports of the heat sink 71, one set of angles is 60 degrees and the other set of angles is 80 degrees.

[0028] With the above structure, when workpiece 2 5 needs to be processed, firstly, the circular slot 51, mounting hole 52 and anti-misalignment hole 53 of workpiece 2 5 are aligned with the positioning pin 72, positioning diamond pin 74 and anti-misalignment pin 73 respectively. Then, workpiece 2 5 is inserted into the positioning plate 7 to achieve precise positioning of workpiece 2 5. Next, the three sets of rotary pressing cylinders 75 start to rotate. After the clamping hook 751 is engaged with the positioning pin 76, the rotary pressing cylinders 75 press down, thereby squeezing the end face of workpiece 2 5 from multiple positions. In conjunction with the positioning plate 7, the workpiece 2 5 is effectively clamped, ensuring the stability of workpiece 2 5 during the processing.

[0029] In summary, the simultaneous clamping and fixing of multiple workpieces 4 and 5 on the processing cylinder 1 reduces the repetitive operation time of clamping, positioning, and disassembly, optimizes equipment and space utilization, achieves multi-purpose use of one machine, enables rapid changeover, and significantly improves processing efficiency.

[0030] Additionally, it should be noted that workpiece 4 and workpiece 5 belong to different processing stages of the same type of workpiece. This equipment is used to clamp workpieces at different processing stages at once, and then simultaneously perform corresponding processing operations on workpieces at different processing stages.

[0031] Example 2: Reference Figure 1 , Figure 2 , Figure 5 , Figure 8 and Figure 9 Similar to Embodiment 1, but with further refinement for better processing of workpiece 2 5: the second positioning part includes a positioning disk 7, which is fixedly connected to the end face of the second mounting plate 3. A heat dissipation groove 71 is provided on the end face of the positioning disk 7. The connection between the midpoints of the two ends of the heat dissipation groove 71 and the vertical edge of the second mounting plate 3 forms a preset angle of 60 degrees. That is, compared to Embodiment 1, the positioning disk 7 in Embodiment 2 is tilted, which facilitates processing of workpiece 2 5 from different angles, improving processing convenience. Positioning round pins 72 and anti-misalignment pins 73 are fixed inside the heat dissipation groove 71. A positioning diamond pin 74 is fixedly connected to the end face of the positioning disk 7. When workpiece 2 5 is installed... When the workpiece is positioned on the positioning plate 7, the positioning pin 72 is inserted into the circular slot 51 of the workpiece 2 5, the anti-misalignment pin 73 is inserted into the anti-misalignment hole 53 of the workpiece 2 5, and the positioning diamond pin 74 is inserted into the mounting hole 52 of the workpiece 2 5. The end faces of the second mounting plate 3 located on the upper and lower sides of the positioning plate 7 are respectively provided with a first clamping part and a second clamping part. Both the first clamping part and the second clamping part include a set of rotary pressing cylinders 75. The rotary pressing cylinders 75 are fixed on the end face of the second mounting plate 3, and the telescopic end of the rotary pressing cylinders 75 is fixedly connected with a clamping hook 751. The end face of the second mounting plate 3 is fixed with a number of positioning pins 76 that match the number of rotary pressing cylinders 75. When the rotary pressing cylinders 75 rotate, the clamping hooks 751 will engage with their corresponding positioning pins 76.

[0032] When the clamping hook 751 of the first clamping part rotates and engages with its corresponding positioning pin 76, the clamping hook 751 is perpendicular to the center line connecting the two sides of the heat sink 71. When the clamping hook 751 of the second clamping part rotates and engages with its corresponding positioning pin 76, the clamping hook 751 forms a preset angle with the center line connecting the two sides of the heat sink 71, and the angle is 60 degrees.

[0033] With the above structure, when workpiece 2 5 needs to be processed, firstly, the circular slot 51, mounting hole 52 and anti-misalignment hole 53 of workpiece 2 5 are aligned with the positioning pin 72, positioning diamond pin 74 and anti-misalignment pin 73 respectively. Then, workpiece 2 5 is inserted into the positioning plate 7 to achieve precise positioning of workpiece 2 5. Next, the two sets of rotary pressing cylinders 75 start to rotate, and after the clamping hook 751 is engaged with the positioning pin 76, the rotary pressing cylinders 75 press down, thereby squeezing the end face of workpiece 2 5 from multiple positions. In conjunction with the positioning plate 7, the workpiece 2 5 is effectively clamped, ensuring the stability of workpiece 2 5 during the processing.

[0034] Furthermore, the second positioning part in both Embodiment 1 and Embodiment 2 can be fixed on the processing cylinder 1 at the same time, thereby achieving clamping of multiple sets of workpieces 2 5 at different angles. This facilitates processing of different positions of workpieces 2 5, reduces the repetitive operation time of clamping, positioning, and disassembly, and further improves processing efficiency.

[0035] Components not described in detail in this article are existing technologies.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A side processing fixture for a hydraulic back cover product, comprising a processing cylinder (1), characterized in that, The processing cylinder (1) is provided with no less than two sets of processing surfaces, and further includes: The first mounting plate (2) is fixed on one of the processing surfaces of the processing cylinder (1). The end face of the first mounting plate (2) is provided with no less than two sets of first positioning parts. The first positioning parts are used to press against the side wall of the workpiece (4) from multiple directions to realize the positioning and clamping of the workpiece (4). The second mounting plate (3) is fixed on one of the processing surfaces of the processing cylinder (1). The end face of the second mounting plate (3) is provided with no less than two sets of second positioning parts. The second positioning parts are used to abut against the front and rear ends of the workpiece (5) to achieve positioning and clamping of the workpiece (5).

2. The side processing fixture for a hydraulic rear cover product according to claim 1, characterized in that, The first positioning part includes positioning components (6), and four sets of positioning components (6) are provided and symmetrically fixed on the end face of the first mounting plate (2). The four sets of positioning components (6) form a positioning station for placing workpiece one (4). The ends of the four sets of positioning components (6) are respectively attached to the four corner walls (41) of workpiece one (4). The end face of the first mounting plate (2) located in the positioning station is respectively fixedly connected to the first abutment (61) and the second abutment (62). The first abutment (61) and the second abutment (62) are symmetrically arranged in two sets along the central horizontal axis of the positioning station. The distance from the second abutment (62) to the central horizontal axis of the positioning station is greater than the distance from the first abutment (61) to the central horizontal axis of the positioning station. When workpiece 1 (4) is installed in the positioning station, the first abutment (61) is in contact with the first boss (42) of workpiece 1 (4), and the second abutment (62) is in contact with the second boss (43) of workpiece 1 (4).

3. The side processing fixture for a hydraulic rear cover product according to claim 2, characterized in that, A first cylinder (63) is fixedly connected to the end face of the first mounting plate (2) located above the positioning station. An upper positioning block (631) is fixedly connected to the telescopic end of the first cylinder (63). A lower positioning block (64) is fixedly connected to the end face of the first mounting plate (2) located below the positioning station. In the clamping state, the protrusions of the upper positioning block (631) and the lower positioning block (64) are at the same distance from the horizontal axis of the center of the positioning station.

4. The side processing fixture for a hydraulic rear cover product according to claim 2, characterized in that, A side positioning block (65) is fixedly connected to the first mounting plate (2), and a positioning column (66) is fixedly connected to the first mounting plate (2). The positioning column (66) is equipped with a clamping rod (661). The side positioning block (65) and the positioning column (66) are located on both sides of the positioning station, and the clamping rod (661) is aligned with the protrusion of the side positioning block (65).

5. The side processing fixture for a hydraulic rear cover product according to claim 4, characterized in that, The point clamp rod (661) is threaded onto the positioning column (66). In the clamping state, the end of the point clamp rod (661) is at the same distance from the protrusion of the side positioning block (65) to the vertical axis of the positioning station center, and is respectively attached to the two side walls of the workpiece (4).

6. The side processing fixture for a hydraulic rear cover product according to claim 1, characterized in that, The second positioning part includes a positioning disk (7), which is fixedly connected to the end face of the second mounting plate (3). A heat dissipation groove (71) is provided on the end face of the positioning disk (7). A positioning round pin (72) and an anti-misalignment pin (73) are fixed in the heat dissipation groove (71). A positioning diamond pin (74) is fixedly connected to the end face of the positioning disk (7). When workpiece 2 (5) is installed on the positioning plate (7), the positioning round pin (72) is inserted into the round slot (51) of workpiece 2 (5), the anti-misalignment pin (73) is inserted into the anti-misalignment hole (53) of workpiece 2 (5), and the positioning diamond pin (74) is inserted into the mounting hole (52) of workpiece 2 (5).

7. The side processing fixture for a hydraulic rear cover product according to claim 6, characterized in that, The second mounting plate (3) located on both sides of the positioning disk (7) is provided with a first clamping part and a second clamping part respectively.

8. The side processing fixture for a hydraulic rear cover product according to claim 7, characterized in that, The first clamping part includes a set of rotary pressing cylinders (75), and the second clamping part includes at least one set of rotary pressing cylinders (75). The rotary pressing cylinders (75) are fixed on the end face of the second mounting plate (3), and the telescopic end of the rotary pressing cylinders (75) is fixedly connected to a clamping hook (751).

9. A side processing fixture for a hydraulic rear cover product according to claim 8, characterized in that, The end face of the second mounting plate (3) is fixed with a positioning pin (76) that matches the number of rotary pressing cylinders (75). When the rotary pressing cylinder (75) rotates, the clamping hook (751) will fit into its corresponding positioning pin (76).

10. A side processing fixture for a hydraulic rear cover product according to claim 4, characterized in that, Anti-slip pads are provided on the first abutment (61), the second abutment (62), the protrusion of the upper positioning block (631), the protrusion of the lower positioning block (64), the protrusion of the side positioning block (65), and the contact surface of the clamping rod (661) and the workpiece (4).

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