Clutch gland positioning machining clamp

Abstract

The invention relates to the technical field of clutch gland machining, in particular to a clutch gland positioning and machining clamp. Comprising a base used for containing a gland and a pressing plate located above the base and moving up and down, and a drill bit fixing table with a drill bit is detachably installed at the bottom end of the pressing plate; the four pre-positioning mechanisms are distributed in the center of the base in a circumferential array mode and used for preliminarily placing and positioning the gland, and the pre-positioning mechanisms move in the radial direction of the circle where the pre-positioning mechanisms are located; the pressing cover placing step is simplified through the elastic self-adaptive design of the pre-positioning mechanisms, and accurate pre-positioning and rigid locking of the pressing cover are achieved through multi-stage positioning of the four pre-positioning mechanisms distributed in a circumferential array mode and the matched positioning set. The same clamp can be suitable for machining glands of various specifications, the clamp does not need to be replaced, and equipment investment and production downtime are reduced.

Description

Technical Field

[0001] The invention relates to the technical field of clutch cover processing, in particular to a clutch cover positioning processing fixture. Background Art

[0002] The clutch cover is a key component in the clutch system, mainly used to compress the clutch plate to ensure the reliability and stability of power transmission. It is usually used in conjunction with the clutch pressure plate, clutch plate and other components; in the processing of the clutch cover, accurate positioning and firm clamping are the key to ensuring processing accuracy and quality.

[0003] There are many problems with traditional clutch cover processing fixtures: 1. Low placement accuracy: The existing clamps directly place the cover on multiple fixed positioning columns, which makes it difficult to accurately place the clutch cover in the processing position, resulting in large dimensional deviations of the processed product, affecting the overall performance and assembly accuracy of the clutch.

[0004] 2. Poor versatility: Fixed positioning columns are often only applicable to the processing of clutch covers of a single specification or model. When clutch covers of different specifications need to be processed, different fixtures need to be replaced, which increases production costs and processing cycles.

[0005] 3. Poor clamping stability: During the processing, due to the influence of cutting force, vibration and other factors, the clutch cover is prone to loosening or displacement, which not only affects the processing accuracy, but may also cause processing accidents. Summary of the invention

[0006] The present invention provides a clutch cover positioning processing fixture to solve the clutch cover processing positioning problem in the related art.

[0007] The present invention provides a clutch cover positioning and processing fixture, a clutch cover positioning and processing fixture, comprising a base for placing the cover and a pressure plate located above the base and moving up and down, the bottom end of the pressure plate is detachably mounted with a drill fixing table with a drill bit; four pre-positioning mechanisms distributed in a circular array at the center of the base are used for preliminary placement and positioning of the cover, and the pre-positioning mechanisms move along the radial direction of the circle; wherein the pre-positioning mechanism comprises a sliding hole penetrating through the base and a sliding column slidably mounted in the sliding hole, an elastic positioning group is elastically arranged on the sliding column, two ends of the elastic positioning group Both sides are elastically provided with lap parts, and the bottom end of the sliding column is provided with a driving mechanism for driving the sliding column to move in the sliding hole; a matching positioning group is connected to the bottom end of the pressure plate through an elastic telescopic rod, and a through groove for the matching positioning group to pass through is opened in the middle of the drill fixing platform; the matching positioning group includes a connecting column fixedly connected to a telescopic end of the elastic telescopic rod, and the connecting columns are circumferentially arrayed and fixedly installed with matching clamping columns corresponding to the positions of the pre-positioning mechanisms, and the matching clamping columns cooperate with the lap parts to position the pressure cover when the pressure plate descends, and the bottom end of the matching clamping column is rotatably connected to an internal positioning component for positioning the inner ring of the pressure cover.

[0008] In one possible implementation, the elastic positioning group includes a connecting block fixedly connected to the side of the sliding column away from the driving mechanism, the connecting block is located at the bottom end of the sliding hole, and the two sides of the connecting block are slidably connected to the sliding groove opened at the bottom end of the base through an L-shaped connecting rod, and the sliding groove is respectively located on both sides of the sliding hole. A rectangular groove for the positioning rod to slide is opened at the upper end of the connecting block, and a connecting spring is fixedly connected between the positioning rod and the sliding hole.

[0009] In one possible implementation, the lap joint is an L-shaped structure, the side walls of the L-shaped connecting rod are provided with accommodating grooves for the lap joints on both sides to move, the two lap joints are connected by springs, and the distance between the vertical sections of the two lap joints and the L-shaped connecting rod gradually decreases from top to bottom.

[0010] In one possible implementation, the sliding hole is provided with connecting grooves connected to the sliding hole on both sides along its length direction, and shielding members are slidably connected in the two connecting grooves, one of the shielding members is fixedly connected to the side of the positioning rod close to the center of the base, and the other shielding member is fixedly connected to the side of the outer contact block away from the center of the base.

[0011] In one possible implementation, the driving mechanism includes a push rod hinged via a first hinge seat, the other end of the push rod is hinged to an annular fixed seat via a second hinge seat, the annular fixed seat is fixedly connected to a lifting rod, and the lifting rod slides up and down through the center of the base.

[0012] In one possible implementation, the mating clamping column is fixedly installed on the outer wall of the connecting column through a mounting seat. The mating clamping column has a U-shaped structure. The distance between the two relative vertical sections of the U-shaped structure is equal to the width of the positioning rod, and the width of the vertical section of the U-shaped structure gradually decreases from top to bottom.

[0013] In one possible implementation, the internal positioning assembly includes two ear seats fixedly connected to the bottom end of the mounting seat, and an elastic telescopic rod 2 is rotatably connected between the two ear seats via a rotating positioning portion, and a resistance block is fixedly connected to the elastic telescopic rod 2 near the bottom end via a connecting plate.

[0014] In one possible implementation, the rotation positioning portion includes a rotation rod that rotates and passes through the two ear seats, the rotation rod fixedly passes through the elastic telescopic rod two, one end of the rotation rod is fixedly connected to an angle limiting ring, the angle limiting ring is fixedly connected to a plug-in rod on the side close to the ear seat, and a plug-in groove is provided on the ear seat close to the side of the resistance block, and the plug-in groove cooperates with the plug-in rod for plugging.

[0015] In one possible implementation, it also includes an external positioning component, which includes an external resistance block slidably connected in the sliding hole and a threaded adjustment rod that rotates through the external resistance block, and the threaded adjustment rod is threadedly connected to the connecting block, and an arc-shaped rubber pad is provided on one side of the external resistance block close to the connecting block.

[0016] In a possible implementation, a trumpet-shaped through hole is formed at the bottom end of the connecting column, and the diameter of the through hole gradually increases from top to bottom.

[0017] The above one or more technical solutions in the embodiments of the present invention have at least one of the following technical effects: 1. A clutch cover positioning and processing fixture provided in an embodiment of the present invention simplifies the cover placement steps through the elastic adaptive design of the pre-positioning mechanism, and the pre-positioning mechanisms distributed in four circular arrays and the multi-level positioning of the matching positioning group realize the precise pre-positioning and rigid locking of the cover; the same fixture can be adapted to the processing of covers of various specifications without the need to replace the fixture, thereby reducing equipment investment and production downtime.

[0018] 2. According to a clutch cover positioning processing fixture provided by an embodiment of the present invention, the driving mechanism controls the lifting rod and the pushing rod through an electric telescopic rod, and synchronously adjusts the radial positions of multiple pre-positioning mechanisms to adapt to covers of different diameters. At the same time, the external positioning component adjusts the position of the external contact block through a threaded adjustment rod to match the outer diameter of the cover.

[0019] 3. A clutch cover positioning and processing fixture provided according to an embodiment of the present invention balances the cutting force distribution, reduces single-point stress concentration, and prolongs the life of the fixture through a synchronous clamping design of the inner and outer rings.

[0020] 4. A clutch cover positioning and processing fixture provided according to an embodiment of the present invention realizes the integration of positioning and processing by cooperating with the positioning group and the pressure plate, and the process connection is smooth. The elastic telescopic rod of the cooperating positioning group provides elastic buffering during the clamping process to avoid displacement of the cover due to rigid impact. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a first-view structural schematic diagram of a clutch cover positioning and processing fixture provided by an embodiment of the present invention.

[0022] Figure 2 It is a second perspective structural schematic diagram of a clutch cover positioning and processing fixture provided by an embodiment of the present invention.

[0023] Figure 3 It is a schematic diagram of the base structure of a clutch cover positioning and processing fixture provided in an embodiment of the present invention.

[0024] Figure 4 yes Figure 2 Enlarged schematic diagram of the structure at position N.

[0025] Figure 5 It is a partial cross-sectional view of the structure of a pre-positioning mechanism and a driving mechanism of a clutch cover positioning processing fixture provided by an embodiment of the present invention.

[0026] Figure 6 It is a structural schematic diagram of a pre-positioning mechanism and a driving mechanism of a clutch cover positioning processing fixture provided by an embodiment of the present invention.

[0027] Figure 7 It is a structural schematic diagram of a drill fixing platform and a matching positioning group of a clutch cover positioning processing fixture provided by an embodiment of the present invention.

[0028] Figure 8 It is a structural schematic diagram of a matching positioning group of a clutch cover positioning processing fixture provided by an embodiment of the present invention.

[0029] Fig. 9 It is a structural cross-sectional view of a rotation positioning portion of a clutch cover positioning processing fixture provided by an embodiment of the present invention.

[0030] Fig.10 It is a schematic diagram of the clutch cover of the workpiece of the present invention before and after the drilling operation.

[0031] In the figure: 1. base; 11. supporting platform; 2. pressure plate; 3. drill bit fixing platform; 4. pre-positioning mechanism; 41. sliding hole; 411. connecting groove; 412. shielding member; 42. sliding column; 43. elastic positioning group; 431. connecting block; 432. L-shaped connecting rod; 433. positioning rod; 434. connecting spring; 44. lap joint; 5. driving mechanism; 51. pushing rod; 52. annular fixing seat; 53. lifting rod; 6. matching positioning group; 60. elastic telescopic rod 1; 61. connecting column; 62. matching clamping column; 63. inner positioning assembly; 631. ear seat; 632. rotating positioning part; 6321. rotating rod; 6322. angle limiting ring; 633. elastic telescopic rod 2; 634. resistance block; 7. outer positioning assembly; 71. outer resistance block; 72. threaded adjustment rod. DETAILED DESCRIPTION

[0032] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described below, and those skilled in the art can make similar improvements without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0033] See also Figure 1 and Figure 2 A clutch cover positioning processing fixture comprises a base 1 for placing the cover and a pressure plate 2 located above the base 1 and moving up and down. The base 1 is fixed on a supporting platform 11 by bolts, and the supporting platform 11 is fixedly installed on a processing machine tool. The pressure plate 2 moves up and down on a support frame by a hydraulic cylinder, and the support frame is also fixedly installed on the processing machine tool. A spring telescopic rod is fixedly installed on the upper end of the supporting platform 11, and a docking cylinder is fixedly connected to the bottom end of the pressure plate 2 corresponding to the position of the spring telescopic rod. When the pressure plate 2 moves downward by the hydraulic cylinder, the docking cylinder will dock with the spring telescopic rod to play a role in alignment. This is a prior art and will not be repeated here. The processing fixture in the present invention can adapt to different processing of clutch covers. The present invention takes drilling as an example, but is not limited to drilling processing.

[0034] See also Figure 1 , Figure 2 and Figure 7The bottom end of the pressure plate 2 is detachably mounted with a drill fixing platform 3 with a drill bit, and the drill fixing platform 3 can be fixedly connected to the bottom end of the pressure plate 2 by bolts. The center of the bottom end of the pressure plate 2 is connected with a matching positioning group 6 through an elastic telescopic rod 60. It should be noted here that the drill fixing platform 3 is a replaceable structure. Different drill fixing platforms 3 have different installation positions and center distances of the drill bits to adapt to drilling operations of clutch glands of different models, and a through groove is opened in the middle of the drill fixing platform 3 for the matching positioning group 6 to pass through, which can also avoid interference when replacing the drill fixing platform 3.

[0035] See also Figure 1 , Figure 2 and Figure 3 The clutch cover positioning processing fixture includes four pre-positioning mechanisms 4 distributed in a circular array at the center of the base 1, which are used for preliminary placement and positioning of the cover, and the pre-positioning mechanism 4 moves radially along the circle; wherein the pre-positioning mechanism 4 includes a sliding hole 41 penetrating through the base 1 and a sliding column 42 slidably installed in the sliding hole 41, an elastic positioning group 43 is elastically arranged on the sliding column 42, and lap joints 44 are elastically arranged on both sides of the elastic positioning group 43, and a driving mechanism 5 for driving the sliding column 42 to move in the sliding hole 41 is arranged at the bottom end of the sliding column 42.

[0036] See also Figure 3 , Figure 4 , Figure 5 and Figure 6 The elastic positioning group 43 includes a connecting block 431 fixedly connected to the side of the sliding column 42 away from the driving mechanism 5. The connecting block 431 is located at the bottom end of the sliding hole 41. The two sides of the connecting block 431 are slidably connected to the sliding grooves opened at the bottom end of the base 1 through L-shaped connecting rods 432. The sliding grooves are respectively located on both sides of the sliding hole 41. A rectangular groove for the positioning rod 433 to slide is opened at the upper end of the connecting block 431. A connecting spring 434 is fixedly connected between the positioning rod 433 and the sliding hole 41.

[0037] The pre-positioning mechanism 4 is used to perform preliminary placement and positioning of the clutch cover. In the initial state, the driving mechanism 5 synchronously drives multiple sliding columns 42 to move in the sliding hole 41 according to the size of the clutch cover type. The positioning rod 433 is at the maximum distance from the sliding hole 41 when the connecting spring 434 is in the initial state. The equipment hole on the clutch cover is aligned with the multiple positioning rods 433 and placed on the base 1. Since the positioning rods 433 are elastically set, the clutch cover can adapt to the movement of the positioning rods 433 when placed. There is no need to ensure that the clutch cover is placed horizontally, which reduces the difficulty of placing the clutch cover. The cross-sectional area of ​​the positioning rods 433 is smaller than the cross-sectional area of ​​the minimum equipment hole of this type of clutch cover, which ensures that the positioning rods 433 can smoothly pass through the equipment hole on the clutch cover to perform preliminary positioning of the clutch cover.

[0038] See also Figure 5 and Figure 6 The driving mechanism 5 includes a push rod 51 hinged through a first hinge seat, the other end of the push rod 51 is hinged on an annular fixed seat 52 through a second hinge seat, the annular fixed seat 52 is fixedly connected to a lifting rod 53, and the lifting rod 53 slides up and down and passes through the center of the base 1.

[0039] Specifically, the driving mechanism 5 is used to drive the multiple sliding columns 42 to move. The bottom end of the lifting rod 53 is connected to an electric telescopic rod. The structure of the electric telescopic rod is not shown in the figure. The telescopic end of the electric telescopic rod drives the lifting rod 53 to move on the base 1, thereby driving the multiple pushing rods 51 on the annular fixed seat 52 to rotate, and the pushing rods 51 push the sliding column 42 to the position in the sliding hole 41.

[0040] See also Figure 5 and Figure 6 The lap joint 44 is an L-shaped structure, and the side wall of the L-shaped connecting rod 432 is provided with a receiving groove for the lap joints 44 on both sides to move. The two lap joints 44 are connected by a spring, and the distance between the vertical sections of the two lap joints 44 and the L-shaped connecting rod 432 gradually decreases from top to bottom.

[0041] See also Figure 2 , Figure 7 and Figure 8The matching positioning group 6 includes a connecting column 61 fixedly connected to the telescopic end of an elastic telescopic rod 60, and the connecting column 61 is circumferentially arrayed and fixedly installed with a matching clamping column 62 corresponding to the position of the pre-positioning mechanism 4. The matching clamping column 62 is fixedly installed on the outer wall of the connecting column 61 through a mounting seat. The matching clamping column 62 is a U-shaped structure, and the distance between the two relative vertical sections of the U-shaped structure is equal to the width of the positioning rod 433, and the width of the vertical section of the U-shaped structure gradually decreases from top to bottom, so that the matching clamping column 62 can contact and cooperate with the lap joint 44 during the downward movement. When the matching clamping column 62 follows the pressure plate 2 to descend, it cooperates with the lap joint 44 to jointly position the pressure cover; the bottom end of the matching clamping column 62 is rotatably connected to an internal positioning component 63 for positioning the inner ring of the pressure cover.

[0042] It should be noted here that the elastic coefficient of the elastic telescopic rod 1 60 is much larger than the elastic coefficient of the connecting spring 434 and the elastic telescopic rod 2 633. When the connecting spring 434 and the elastic telescopic rod 2 633 are squeezed to the minimum stroke, the elastic telescopic rod 1 60 still does not deform. Specifically, the connecting column 61 moves downward under the drive of the pressure plate 2, and the connecting column 61 simultaneously drives the matching clamping column 62 and the inner positioning component 63 to move downward. During the downward movement, the matching clamping column 62 will come into contact with the lap joint 44, and the lower end of the matching clamping column 62 will come into contact with the lap joint 44. To the lateral section of the L-shaped structure of the lap joint 44, and at the same time push the positioning rod 433 to move away from the center of the base 1 until the positioning rod 433 contacts the inner wall of the hole of the pressure capping device, so that the elastic positioning of the pressure capping device hole by the positioning rod 433 is formed into a rigid positioning. At the same time, the internal positioning component 63 also forms multi-point positioning for the pressure cap. When the pressure plate 2 drives the drill fixing platform 3 to drill the pressure cap, the elastic telescopic rod 60 will be compressed close to the bottom end of the pressure plate 2, but the clamping column 62 and the internal positioning component 63 still play a positioning role for the pressure cap.

[0043] See also Figure 2 and Figure 7 A trumpet-shaped through hole is provided at the bottom end of the connecting column 61, and the diameter of the through hole gradually increases from top to bottom. When the connecting column 61 moves downward, the trumpet-shaped through hole on the connecting column 61 will cooperate with the lifting rod 53, and the axis of the connecting column 61 coincides with the axis of the lifting rod 53, which will also cooperate to play a positioning role. In addition, the through hole at the bottom end of the connecting column 61 can avoid the lifting rod 53 during the downward movement to avoid interference.

[0044] See also Figure 8 and Fig. 9The inner positioning assembly 63 includes two ear seats 631 fixedly connected to the bottom end of the mounting seat, and an elastic telescopic rod 633 is rotatably connected between the two ear seats 631 through a rotating positioning portion 632, and a resistance block 634 is fixedly connected to the elastic telescopic rod 633 near the bottom through a connecting plate. The rotating positioning portion 632 includes a rotating rod 6321 that rotates and penetrates the two ear seats 631, and the rotating rod 6321 is fixedly penetrated by the elastic telescopic rod 633. One end of the rotating rod 6321 is fixedly connected to an angle limiting ring 6322, and a plug-in rod is fixedly connected to the side of the angle limiting ring 6322 close to the ear seat 631. A plug-in slot is provided on the ear seat 631 close to the resistance block 634, and the plug-in slot is matched with the plug-in rod.

[0045] In the initial state, the rotating rod 6321 can be rotated at a certain angle on the ear seat 631. According to the size of the pressure cover type, the angle of the rotating rod 6321 is rotated to adjust the angle between the elastic telescopic rod 2 633 and the matching clamping column 62. By matching the plug-in rod on the angle limit ring 6322 with the plug-in groove on the ear seat 631, the rotating rod 6321 drives the elastic telescopic rod 2 633 to be fixed at a suitable angle, so that when the elastic telescopic rod 2 633 moves downward, it can drive the resistance block 634 to resist the inner wall of the pressure cover.

[0046] See also Figure 5 and Figure 6 The clutch cover positioning processing fixture also includes an external positioning component 7, which includes an external contact block 71 slidably connected to the sliding hole 41 and a threaded adjustment rod 72 that rotates and passes through the external contact block 71, and the threaded adjustment rod 72 is threadedly connected to the connecting block 431, and an arc-shaped rubber pad is provided on one side of the external contact block 71 close to the connecting block 431.

[0047] According to the size of the gland model, measure the distance from the equipment hole on the gland of the specific model to the edge of the gland, use the rotating threaded adjustment rod 72 to drive the outer contact block 71 to move in the sliding hole 41 and then adjust the outer contact block 71 so that the distance from the outer contact block 71 to the center of the base 1 is slightly larger than the radius of the gland, and the arc-shaped rubber pad set on the outer contact block 71 contacts the outer edge of the gland.

[0048] See also Figure 3 and Figure 5 The sliding hole 41 is provided with connecting grooves 411 connected to the sliding hole 41 on both sides along its length direction, and shielding members 412 are slidably connected in the two connecting grooves 411, one of the shielding members 412 is fixedly connected to the side of the positioning rod 433 close to the center of the base 1, and the other shielding member 412 is fixedly connected to the side of the outer contact block 71 away from the center of the base 1.

[0049] The shielding member 412 is provided to shield the sliding hole 41 and to guide the positioning rod 433 and the outer contact block 71 when they move. During the sliding of the positioning rod 433 and the outer contact block 71 in the sliding hole 41, they can adaptively shield the two ends of the sliding hole 41 to avoid excessive debris from falling in during the processing of the pressure cover.

[0050] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0051] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connect", "install", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, an integral connection, or a sliding connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0052] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, all equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A clutch cover positioning and processing fixture, comprising a base (1) for placing the cover and a pressure plate (2) located above the base (1) and moving up and down, characterized in that: A drill bit fixing platform (3) with a drill bit is detachably mounted on the bottom end of the pressing plate (2); Four pre-positioning mechanisms (4) are distributed in a circular array at the center of the base (1), and are used to initially place and position the gland, and the pre-positioning mechanisms (4) move along the radial direction of the circle; The pre-positioning mechanism (4) comprises a sliding hole (41) extending through the base (1) and a sliding column (42) slidably mounted in the sliding hole (41); an elastic positioning group (43) is elastically arranged on the sliding column (42); both sides of the elastic positioning group (43) are elastically arranged with bridging members (44); and a driving mechanism (5) for driving the sliding column (42) to move in the sliding hole (41) is arranged at the bottom end of the sliding column (42); A matching positioning group (6) is connected to the bottom end of the pressing plate (2) via an elastic telescopic rod (60); a through slot is provided in the middle of the drill bit fixing platform (3) for the matching positioning group (6) to pass through; The matching positioning group (6) comprises a connecting column (61) fixedly connected to the telescopic end of an elastic telescopic rod (60), the connecting columns (61) are arranged in a circumferential array and are fixedly installed with matching clamping columns (62) corresponding to the positions of the pre-positioning mechanism (4), the matching clamping columns (62) cooperate with the bridging member (44) to position the pressure cover when the pressure plate (2) descends, and the bottom end of the matching clamping column (62) is rotatably connected to an inner positioning component (63) for positioning the inner ring of the pressure cover.

2. A clutch cover positioning and processing fixture according to claim 1, characterized in that: The elastic positioning group (43) comprises a connecting block (431) fixedly connected to a side of the sliding column (42) away from the driving mechanism (5), the connecting block (431) being located at the bottom end of the sliding hole (41), the two sides of the connecting block (431) being slidably connected to a slide groove provided at the bottom end of the base (1) via an L-shaped connecting rod (432), the slide grooves being respectively located at two sides of the sliding hole (41), the upper end of the connecting block (431) being provided with a rectangular groove for the positioning rod (433) to slide, and a connecting spring (434) being fixedly connected between the positioning rod (433) and the sliding hole (41).

3. A clutch cover positioning and processing fixture according to claim 2, characterized in that: The lap joint (44) is an L-shaped structure, and a side wall of the L-shaped connecting rod (432) is provided with a receiving groove for the lap joints (44) on both sides to move. The two lap joints (44) are connected by a spring, and the distance between the vertical sections of the two lap joints (44) and the L-shaped connecting rod (432) gradually decreases from top to bottom.

4. A clutch cover positioning and processing fixture according to claim 3, characterized in that: The sliding hole (41) is provided with connecting grooves (411) connected to the sliding hole (41) on both sides along its length direction, and shielding members (412) are slidably connected in the two connecting grooves (411), wherein one of the shielding members (412) is fixedly connected to a side of the positioning rod (433) close to the center of the base (1), and the other shielding member (412) is fixedly connected to a side of the outer contact block (71) away from the center of the base (1).

5. The clutch cover positioning and processing fixture according to claim 1, characterized in that: The driving mechanism (5) comprises a push rod (51) hingedly connected via a first hinge seat, the other end of the push rod (51) being hingedly connected to an annular fixing seat (52) via a second hinge seat, the annular fixing seat (52) being fixedly connected to a lifting rod (53), and the lifting rod (53) slides up and down and passes through the center of the base (1).

6. A clutch cover positioning and processing fixture according to claim 1, characterized in that: The matching clamping column (62) is fixedly mounted on the outer side wall of the connecting column (61) via a mounting seat, and the matching clamping column (62) is in a U-shaped structure, wherein the distance between two relatively vertical sections of the U-shaped structure is equal to the width of the positioning rod (433), and the width of the vertical section of the U-shaped structure gradually decreases from top to bottom.

7. The clutch cover positioning and processing fixture according to claim 1, characterized in that: The inner positioning assembly (63) comprises two ear seats (631) fixedly connected to the bottom end of the mounting seat, a second elastic telescopic rod (633) is rotatably connected between the two ear seats (631) via a rotating positioning portion (632), and a resistance block (634) is fixedly connected to a position near the bottom end of the second elastic telescopic rod (633) via a connecting plate.

8. A clutch cover positioning and processing fixture according to claim 7, characterized in that: The rotation positioning portion (632) comprises a rotation rod (6321) that rotates and passes through the two ear seats (631); the rotation rod (6321) is fixedly passed through the second elastic telescopic rod (633); one end of the rotation rod (6321) is fixedly connected to an angle limiting ring (6322); a side of the angle limiting ring (6322) close to the ear seat (631) is fixedly connected to a plug-in rod; a plug-in groove is provided on the ear seat (631) close to the abutment block (634); the plug-in groove is plugged in cooperation with the plug-in rod.

9. The clutch cover positioning and processing fixture according to claim 1, characterized in that: The device also comprises an external positioning assembly (7), the external positioning assembly (7) comprising an external contact block (71) slidably connected in the sliding hole (41) and a threaded adjustment rod (72) rotatably passing through the external contact block (71), wherein the threaded adjustment rod (72) is threadedly connected to the connecting block (431), and an arc-shaped rubber pad is provided on one side of the external contact block (71) close to the connecting block (431).

10. The clutch cover positioning and processing fixture according to claim 1, characterized in that: A trumpet-shaped through hole is provided at the bottom end of the connecting column (61), and the diameter of the through hole gradually increases from top to bottom.

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