Clamping device and machining equipment

Abstract

The utility model relates to a clamping device and machining equipment. The clamping device comprises a supporting bottom plate and a clamping device, the pre-positioning mechanism is arranged on the supporting bottom plate and can move relative to the supporting bottom plate in the front-back direction; the positioning mechanism comprises a front-back limiting assembly used for limiting the workpiece in the front-back direction of the clamping device, a left-right limiting assembly used for limiting the workpiece in the left-right direction of the clamping device and an up-down limiting assembly used for limiting the workpiece in the up-down direction of the clamping device. The front-back limiting assembly, the left-right limiting assembly and the up-down limiting assembly are arranged on the supporting bottom plate. According to the clamping device, the assembling precision of the workpiece (such as the plate spring connecting shaft) is guaranteed, meanwhile, the assembling efficiency of the workpiece (such as the plate spring connecting shaft) is improved, and therefore stable operation of machining equipment is guaranteed, and the vehicle assembling and production requirements are met.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of clamping assembly, in particular to a clamping device and machining equipment. BACKGROUND

[0002] With the continuous progress of vehicle processing technology and the continuous diversification of vehicle application scenarios, the requirements for vehicle assembly are getting higher and higher. In the vehicle assembly process, the leaf spring connecting shaft, as a shaft-like structure connecting the automobile leaf spring, has a high precision requirement and a very urgent delivery task, so its assembly efficiency directly determines the production and delivery efficiency of the automobile suspension system.

[0003] In the related art, manual clamping is usually used, but due to the large weight, the positioning accuracy is low, resulting in poor clamping force and poor reference consistency, which is difficult to meet the vehicle assembly and production requirements. CONTENT OF THE UTILITY MODEL

[0004] Therefore, it is necessary to provide a clamping device and machining equipment aiming at the above technical problems.

[0005] A clamping device comprises:

[0006] a support bottom plate;

[0007] a pre-positioning mechanism arranged on the support bottom plate and movable relative to the support bottom plate in the front-rear direction;

[0008] a positioning mechanism comprising a front-rear limiting assembly for limiting a workpiece in the front-rear direction of the clamping device, a left-right limiting assembly for limiting the workpiece in the left-right direction of the clamping device, and an up-down limiting assembly for limiting the workpiece in the up-down direction of the clamping device, the front-rear limiting assembly, the left-right limiting assembly, and the up-down limiting assembly being arranged on the support bottom plate.

[0009] In one embodiment, the front-rear limiting assembly comprises:

[0010] a support limiting part, a contact end surface of the support limiting part being provided with a plurality of spaced-apart air outlet holes, the plurality of air outlet holes being capable of abutting the workpiece in the front-rear direction of the clamping device.

[0011] In one embodiment, the front-rear limiting assembly comprises:

[0012] a lever driving part and a first mounting part, the support limiting part and the lever driving part being arranged on the first mounting part, an output end of the lever driving part being connected to the support limiting part, and the contact end surface of the support limiting part being capable of abutting the workpiece.

[0013] In one of the embodiments, the left and right limiting assemblies comprise:

[0014] The support driving member and the corner driving member are arranged on one side of the support driving member, the movable part of the support driving member is capable of abutting against one side of the workpiece, and the movable part of the corner driving member is capable of clamping the other side of the workpiece.

[0015] In one of the embodiments, the upper and lower limiting assemblies comprise:

[0016] The first support member and the second support member are arranged on both ends of the workpiece along the length direction of the workpiece, and the first support member and the second support member are capable of abutting against the bottom of the workpiece.

[0017] In one of the embodiments, the workpiece is a plate spring connecting shaft with a predetermined positioning step, a positioning reference surface and a machining part, the predetermined positioning mechanism is capable of being opposite to the predetermined positioning step, the front and rear limiting assemblies are capable of being opposite to the positioning reference surface, the left and right limiting assemblies are capable of being wrapped around the outside of the machining part, and the upper and lower limiting assemblies are located below the machining part.

[0018] In one of the embodiments, the predetermined positioning mechanism comprises a side surface supporting assembly, the side surface supporting assembly comprises a first side surface supporting member and a second side surface supporting member, the first side surface supporting member and the second side surface supporting member are oppositely arranged, the first side surface supporting member and the second side surface supporting member are capable of limiting the workpiece therebetween along the left and right directions of the clamping device, and the top of the first side surface supporting member and the top of the second side surface supporting member are each provided with a beveled section.

[0019] In one of the embodiments, the predetermined positioning mechanism comprises a transferring assembly and a bottom surface supporting unit, the transferring assembly is connected to the bottom surface supporting unit, the bottom surface supporting unit is capable of supporting the workpiece, and the transferring assembly is capable of driving the bottom surface supporting unit to relatively approach or move away from the positioning mechanism.

[0020] In one of the embodiments, the transferring assembly comprises a sliding rail, a connecting plate, a buffer rubber pad and a limiting block, one side of the connecting plate is connected to the bottom surface supporting unit, the other side of the connecting plate is connected to the sliding rail, one side of the buffer rubber pad is connected to the end of the sliding rail, and the other side of the buffer rubber pad is connected to the limiting block.

[0021] A machining device comprises:

[0022] The clamping device as described above.

[0023] The technical effects of the embodiments provided in the present application are as follows:

[0024] The clamping device is used in the assembly process of the workpiece (such as the leaf spring connecting shaft), the pre-positioning mechanism arranged on the support bottom plate is close to and abuts against the workpiece (such as the pre-positioning step of the leaf spring connecting shaft) in the front-rear direction of the support bottom plate to limit the position, that is, to limit the initial position of the partial shaft body area of the workpiece (such as the leaf spring connecting shaft), the front-rear limiting assembly in the positioning mechanism is close to and abuts against the workpiece (such as the leaf spring connecting shaft) in the front-rear direction of the clamping device to limit the position, the left-right limiting assembly in the positioning mechanism is close to and abuts against the workpiece (such as the leaf spring connecting shaft) in the left-right direction of the clamping device to limit the position, and the up-down limiting assembly in the positioning mechanism is close to and abuts against the workpiece (such as the leaf spring connecting shaft) in the up-down direction of the clamping device to limit the position, that is, to limit the position of the remaining shaft body area (such as the positioning reference surface, the side surface and the bottom of the machining part of the leaf spring connecting shaft) of the workpiece, so that the position of the workpiece (such as the leaf spring connecting shaft) in each direction is limited without relying on manual clamping, the problem of low positioning accuracy caused by the self-weight of the manual clamping mode is effectively improved, the clamping force and the reference consistency are improved, the assembly precision of the workpiece (such as the leaf spring connecting shaft) is ensured, the assembly efficiency of the workpiece (such as the leaf spring connecting shaft) is improved, the stable operation of the machining equipment is ensured, and the vehicle assembly and production requirements are met. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0026] Figure 1 It is a structural schematic diagram of the clamping device in an embodiment;

[0027] Figure 2 It is a structural schematic diagram of the leaf spring connecting shaft in an embodiment;

[0028] Figure 3 It is a specific structural schematic diagram of the clamping device in an embodiment;

[0029] Figure 4 It is a specific structural schematic diagram of the transfer assembly 230 in an embodiment;

[0030] Figure 5 It is a specific structural schematic diagram of the positioning mechanism 30 in an embodiment;

[0031] Figure 6 It is a specific structural schematic diagram of the positioning mechanism 30 in an embodiment. DETAILED DESCRIPTION

[0032] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0033] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0034] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0035] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0036] Figure 1 This is a schematic diagram of the clamping device in one embodiment.

[0037] In this embodiment, as Figure 1 As shown, the clamping device, which can be used to constrain the position of a workpiece, includes a support base plate 10, a pre-positioning mechanism 20, and a positioning mechanism 30. Figures 2-3 This is a schematic diagram of the structure of a leaf spring connecting shaft. The workpiece can be a leaf spring connecting shaft in a vehicle that has a pre-positioning step 40, a positioning reference surface 50, and a machining section 60.

[0038] The pre-positioning mechanism 20 is disposed on the support base plate 10. The pre-positioning mechanism 20 includes a bottom support unit 210, a side support assembly 220 and a transfer assembly 230. The bottom support unit 210 is directly opposite the pre-positioning step of the leaf spring connecting shaft. The contact end face of the side support assembly 220 is directly opposite the shaft body of the leaf spring connecting shaft. The transfer assembly 230 is connected to the bottom support unit 210. The bottom support unit 210 can support the leaf spring connecting shaft. The transfer assembly 230 can drive the bottom support unit 210 and the leaf spring connecting shaft to move relatively closer to or away from the positioning mechanism 30.

[0039] The support base plate 10 can be a support structure connected to the pre-positioning mechanism 20 and the positioning mechanism 30, capable of providing support for the pre-positioning mechanism 20 and the positioning mechanism 30. The pre-positioning mechanism 20 can be a functional structure arranged on the support base plate 10, capable of abutting the pre-positioning step and the shaft body of the leaf spring connecting shaft and positionally constraining the middle shaft body area of the leaf spring connecting shaft, and driving the leaf spring connecting shaft after being positionally constrained to move relative to the support base plate 10 in the front-back direction of the support base plate 10. The bottom supporting unit 210 can be a functional unit arranged in the middle area of the support base plate 10, capable of abutting the pre-positioning step of the leaf spring connecting shaft and positionally constraining the pre-positioning step along the bottom of the clamping device. The side support assembly 220 can be a functional assembly arranged in the middle area of the support base plate 10, capable of abutting the shaft body side of the leaf spring connecting shaft and positionally constraining the shaft body of the leaf spring connecting shaft along the left-right direction of the clamping device. The transfer assembly 230 can be a functional assembly arranged in the middle area of the support base plate 10 and connected to the bottom supporting unit 210 and the side support assembly 220, capable of driving the leaf spring connecting shaft positionally constrained by the bottom supporting unit 210 and the side support assembly 220 to move relative to the positioning mechanism 30 in the front-back direction of the support base plate 10 until the target position. Optionally, the bottom supporting unit 210 can be a bottom supporting plate.

[0040] As shown in Figure 3 The side support assembly 220 includes a first side support 2210 and a second side support 2220, which are oppositely arranged and capable of limiting the leaf spring connecting shaft therebetween along the left-right direction of the clamping device, and the top of each of the first side support 2210 and the second side support 2220 is provided with a beveled section.

[0041] As shown in Figure 4 The transfer assembly 230 includes a sliding rail 2310, a connecting plate 2320, a buffer rubber pad 2330, and a limiting block 2340, one side of the connecting plate 2320 is connected to the bottom supporting unit 210, the opposite side of the connecting plate 2320 is connected to the sliding rail 2310, one side of the buffer rubber pad 2330 is connected to the end of the sliding rail 2310, and the opposite side of the buffer rubber pad 2330 is connected to the limiting block 2340.

[0042] Specifically, as shown in Figure 3As shown, the two groups of sliding rails 2310 in the moving and carrying assembly 230 drive the position-restricted leaf spring connecting shaft to slide forward and backward, the limiting blocks 2340 can prevent the pre-positioning mechanism 20 from sliding out of the two groups of sliding rails 2310, the buffer rubber pads 2330 arranged between the sliding rails 2310 and the limiting blocks 2340 have the functions of buffering and shock absorption, the inclined surfaces of the first side support 2210 and the second side support 2220 form a "V" structure, which facilitates the quick positioning of the leaf spring connecting shaft; in addition, the dustproof cover arranged in the moving and carrying assembly 230 can provide the sliding rails 2310 with the functions of slag prevention and dust prevention.

[0043] Through the cooperation of the bottom bearing unit 210 and the side support assembly 220, the bottom and side of the middle shaft body region of the leaf spring connecting shaft are position-restricted, and under the action of the moving and carrying assembly 230, the moving range of the leaf spring connecting shaft is adjusted, so as to carry the preliminarily position-restricted leaf spring connecting shaft to the corresponding position of the positioning mechanism 30.

[0044] The positioning mechanism 30 includes a front and rear limiting assembly 310, a left and right limiting assembly 320, and an upper and lower limiting assembly 330. The front and rear limiting assembly 310 is used for limiting the leaf spring connecting shaft in the front and rear direction of the clamping device, the left and right limiting assembly 320 is used for limiting the leaf spring connecting shaft in the left and right direction of the clamping device, and the upper and lower limiting assembly 330 is used for limiting the leaf spring connecting shaft in the up and down direction of the clamping device. The front and rear limiting assembly 310, the left and right limiting assembly 320, and the upper and lower limiting assembly 330 are arranged on the support base plate 10. The pre-positioning mechanism 20 can be opposite to the pre-positioning step of the leaf spring connecting shaft. The front and rear limiting assembly 310 can be opposite to the positioning reference surface of the leaf spring connecting shaft. The left and right limiting assembly 320 can surround the outside of the machining part of the leaf spring connecting shaft. The upper and lower limiting assembly 330 is located below the machining part of the leaf spring connecting shaft.

[0045] The positioning mechanism 30 can be a functional structure arranged at both ends of the support base plate 10, which can abut against the positioning reference surface of the leaf spring connecting shaft, the outside of the machining part, and the pre-positioning step, and position-restrict the shaft body region of the leaf spring connecting shaft. The front and rear limiting assembly 310 can be a functional assembly arranged at both ends of the support base plate 10, which can abut against the positioning reference surface of the leaf spring connecting shaft and position-restrict the positioning reference surface in the front and rear direction of the clamping device. The left and right limiting assembly 320 can be a functional assembly arranged at both ends of the support base plate 10, which can abut against the outside of the machining part of the leaf spring connecting shaft and position-restrict the machining part in the left and right direction of the clamping device. The upper and lower limiting assembly 330 can be a functional assembly arranged at both ends of the support base plate 10, which can abut against the bottom of the machining part of the leaf spring connecting shaft and position-restrict the bottom of the machining part in the up and down direction of the clamping device.

[0046] As shown in FIG. 6, the positioning mechanism 30 is arranged at the two ends of the support base plate 10, and can abut against the positioning reference surface of the leaf spring connecting shaft, the outside of the machining part, and the pre-positioning step, and position-restrict the shaft body region of the leaf spring connecting shaft. Figure 5As shown, the front and rear limiting assembly 310 includes a lever driving member 3110, a supporting limiting component 3120, and a first mounting component 3130, the lever driving member 3110 and the supporting limiting component 3120 are arranged on the first mounting component 3130, the output end of the lever driving member 3110 is connected to the supporting limiting component 3120, and the contact end surface of the supporting limiting component 3120 can be fitted with the positioning reference surface of the leaf spring connecting shaft.

[0047] The supporting limiting component 3120 is provided with a plurality of air outlet holes, which are arranged between the contact end surface of the supporting limiting component 3120 and the positioning reference surface of the leaf spring connecting shaft, and can be fitted with the positioning reference surface of the leaf spring connecting shaft along the front and rear direction of the clamping device. Optionally, the lever driving member 3110 can be a lever oil cylinder or a lever air cylinder, etc. The supporting limiting component 3120 can be a supporting limiting block or a supporting limiting seat, etc. The first mounting component 3130 can be a mounting seat or a mounting plate, or a mounting block, etc.

[0048] It should be noted that when the positioning reference surface of the leaf spring connecting shaft is closely fitted with the plurality of air outlet holes on the supporting limiting component 3120, that is, the contact end surface of the supporting limiting component 3120 and the positioning reference surface of the leaf spring connecting shaft are closely fitted, so that the leaf spring connecting shaft can be limited in the front and rear direction of the clamping device to limit the freedom of the leaf spring connecting shaft along the front and rear direction of the clamping device, and the air pressure can be kept stable. During the assembly of the leaf spring connecting shaft, if the leaf spring connecting shaft is loose, the gap between the positioning reference surface of the leaf spring connecting shaft and the contact end surface of the supporting limiting component 3120 becomes larger, causing air pressure leakage. When the pressure is less than a critical value, the system alarms to prompt the operator to check the processing failure in time.

[0049] The left and right limiting assembly 320 includes a supporting driving member 3210, an angle driving member 3220, and a second mounting component 3230, the supporting driving member 3210 and the angle driving member 3220 are arranged on the second mounting component 3230, the movable part of the supporting driving member 3210 is opposite to the outer end surface of the processing part of the leaf spring connecting shaft, and the clamping part of the angle driving member 3220 is opposite to the outer end surface of the processing part of the leaf spring connecting shaft. Optionally, the supporting driving member 3210 can be a supporting oil cylinder or a supporting air cylinder, etc. The angle driving member 3220 can be an angle oil cylinder or an angle air cylinder, etc. The second mounting component 3230 can be a mounting seat or a mounting plate, or a mounting block, etc.

[0050] Specifically, as shown in FIG. 4, the supporting limiting component 3120 is provided with a plurality of air outlet holes, which are arranged between the contact end surface of the supporting limiting component 3120 and the positioning reference surface of the leaf spring connecting shaft, and can be fitted with the positioning reference surface of the leaf spring connecting shaft along the front and rear direction of the clamping device. Figure 6As shown, the support driving member 3210 and the corner driving member 3220 are combined oil cylinders, that is, the support driving member 3210 abuts against the outer side end face of the processed part of the leaf spring connecting shaft, and the corner driving member 3220 presses and clamps the outer side end face of the processed part of the leaf spring connecting shaft, so that the combined oil cylinder effectively limits the freedom of the leaf spring connecting shaft in the left-right direction of the clamping device, and further clamps the processed part of the leaf spring connecting shaft at any position.

[0051] The upper and lower limiting components 330 include first support members 3310 and second support members 3320, which are arranged at both ends of the leaf spring connecting shaft along the length direction of the leaf spring connecting shaft, and can abut against the bottom of the processed part of the leaf spring connecting shaft; the first support members 3310 and the second support members 3320 are multiple, and the multiple first support members 3310 and the multiple second support members 3320 are arranged in equal height and interval. Optionally, the first support members 3310 and the second support members 3320 can be support oil cylinders or support air cylinders, etc.

[0052] Specifically, as shown in the figure, Figure 6 When clamping and limiting the leaf spring connecting shaft, the first support members 3310 and the second support members 3320 in the upper and lower limiting components 330 provide upward support force for the leaf spring connecting shaft, and in addition, the linear driving cylinders arranged on the support base plate 10 also limit the freedom of the leaf spring connecting shaft in the up-down direction of the clamping device, which can further constrain the position of the middle shaft body region of the leaf spring connecting shaft.

[0053] During the assembly of the leaf spring connecting shaft, the bottom surface supporting unit 210 in the pre-positioning mechanism 20 arranged on the support base plate 10 is close to and abuts against the pre-positioning step of the leaf spring connecting shaft, that is, the preliminary position constraint of the middle shaft body region of the leaf spring connecting shaft is realized, the front and rear limiting components 310 in the positioning mechanism 30 arranged on the support base plate 10 are close to and abut against the positioning reference surface of the leaf spring connecting shaft to limit the freedom of the leaf spring connecting shaft in the front and rear direction of the clamping device, the left and right limiting components 320 in the positioning mechanism 30 are close to and abut against the outside of the processed part of the leaf spring connecting shaft to limit the freedom of the leaf spring connecting shaft in the left and right direction of the clamping device, and the upper and lower limiting components 330 in the positioning mechanism 30 are close to and abut against the bottom of the processed part of the leaf spring connecting shaft to limit the freedom of the leaf spring connecting shaft in the up-down direction of the clamping device, that is, the position constraint of the remaining shaft body regions (such as the positioning reference surface, the side surface and the bottom of the processed part) of the leaf spring connecting shaft is realized.

[0054] The division of each module in the above-mentioned clamping device is only for illustration, and in other embodiments, the clamping device can be divided into different modules as needed to complete all or part of the functions of the above-mentioned clamping device.

[0055] The application also provides a processing equipment comprising the clamping device provided in the above embodiments.

[0056] The clamping device and the processing equipment provided in the above embodiments can be used in the assembly of a workpiece (such as a leaf spring connecting shaft), the pre-positioning mechanism arranged on the support bottom plate is close to and abuts against the workpiece (such as the pre-positioning step of the leaf spring connecting shaft) in the front-rear direction of the support bottom plate to limit the position, that is, to limit the initial position of the partial shaft body region of the workpiece (such as the leaf spring connecting shaft), the front-rear limiting assembly in the positioning mechanism arranged on the support bottom plate is close to and abuts against the workpiece (such as the leaf spring connecting shaft) in the front-rear direction of the clamping device to limit the position, the left-right limiting assembly in the positioning mechanism is close to and abuts against the workpiece (such as the leaf spring connecting shaft) in the left-right direction of the clamping device to limit the position, and the up-down limiting assembly in the positioning mechanism is close to and abuts against the workpiece (such as the leaf spring connecting shaft) in the up-down direction of the clamping device to limit the position, that is, to limit the position of the remaining shaft body region (such as the positioning reference surface of the leaf spring connecting shaft, the side surface and the bottom surface of the processing part) of the workpiece, so that the position of the workpiece (such as the leaf spring connecting shaft) in each direction is limited without relying on manual clamping, the problem of poor clamping force and poor reference consistency caused by low positioning accuracy due to the large weight of manual clamping is effectively improved, the assembly accuracy of the workpiece (such as the leaf spring connecting shaft) is ensured, and the assembly efficiency of the workpiece (such as the leaf spring connecting shaft) is improved, so that the processing equipment can be stably operated, and the vehicle assembly and production requirements can be met, which has important economic value and practical value.

[0057] Any combination of the technical features of the above embodiments can be combined, and to make the description concise, all possible combinations of the technical features in the above embodiments are not described, however, as long as the combination of the technical features does not exist, it should be considered as the scope of the description.

[0058] The above embodiments only express several implementation manners of the application, the description is more specific and detailed, but it should not be understood as a limitation on the patent application scope. It should be pointed out that for ordinary skilled persons in the art, without departing from the concept of the application, a number of modifications and improvements can be made, which all belong to the protection scope of the application. Therefore, the patent protection scope of the application should be subject to the appended claims.

Claims

1. A clamping device, characterized in that Comprising: a support base plate; a pre-positioning mechanism arranged on the support base plate and movable relative to the support base plate in a front-rear direction; a positioning mechanism comprising a front-rear positioning assembly for limiting a workpiece in a front-rear direction of the clamping device, a left-right positioning assembly for limiting the workpiece in a left-right direction of the clamping device, and an up-down positioning assembly for limiting the workpiece in an up-down direction of the clamping device, the front-rear positioning assembly, the left-right positioning assembly, and the up-down positioning assembly being arranged on the support base plate.

2. The clamping device of claim 1, wherein The front-rear positioning assembly comprises a support limiting component, a contact end surface of the support limiting component being provided with a plurality of spaced-apart air outlet holes, the plurality of air outlet holes being capable of abutting the workpiece in the front-rear direction of the clamping device.

3. The clamping device of claim 2, wherein The front-rear positioning assembly comprises: a lever driving member and a first mounting component, the support limiting component and the lever driving member being arranged on the first mounting component, an output end of the lever driving member being connected to the support limiting component, and a contact end surface of the support limiting component being capable of abutting the workpiece.

4. The clamping device of claim 1, wherein The left-right positioning assembly comprises: a support driving member and a corner driving member, the corner driving member being arranged on one side of the support driving member, a movable portion of the support driving member being capable of abutting one side of the workpiece, and a movable portion of the corner driving member being capable of clamping the other side of the workpiece.

5. The clamping device of claim 1, wherein The up-down positioning assembly comprises: a first support member and a second support member, the first support member and the second support member being arranged on both ends of the workpiece in a length direction of the workpiece, and the first support member and the second support member being capable of abutting a bottom portion of the workpiece.

6. The clamping device of claim 1, wherein The workpiece is a plate spring connecting shaft having a pre-positioning step, a positioning reference surface, and a processing portion, the pre-positioning mechanism being capable of being aligned with the pre-positioning step, the front-rear positioning assembly being capable of being aligned with the positioning reference surface, the left-right positioning assembly being capable of being wrapped around an outer side of the processing portion, and the up-down positioning assembly being located below the processing portion.

7. The clamping device of claim 1, wherein The pre-positioning mechanism comprises a side surface support assembly, the side surface support assembly comprising a first side surface support member and a second side surface support member, the first side surface support member and the second side surface support member being oppositely arranged, the first side surface support member and the second side surface support member being capable of limiting the workpiece therebetween in a left-right direction of the clamping device, and a top portion of each of the first side surface support member and the second side surface support member being provided with a beveled section.

8. The holding device according to claim 1, characterized in that The pre-positioning mechanism comprises a transfer assembly and a bottom surface supporting unit, the transfer assembly being connected to the bottom surface supporting unit, the bottom surface supporting unit being capable of supporting the workpiece, and the transfer assembly being capable of driving the bottom surface supporting unit to relatively approach or move away from the positioning mechanism.

9. The clamping device of claim 8, wherein The transfer assembly comprises a slide rail, a connecting plate, a buffer rubber pad, and a limiting block, one side of the connecting plate being connected to the bottom surface supporting unit, the other side of the connecting plate being connected to the slide rail, one side of the buffer rubber pad being connected to an end portion of the slide rail, and the other side of the buffer rubber pad being connected to the limiting block.

10. A processing apparatus characterized by comprising: Comprising: the clamping device according to any one of claims 1 to 9.

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