Clamp suitable for long thin-wall part

Abstract

According to the clamp suitable for the long thin-wall part, the first installation block and the second installation block are arranged at the two ends of the bottom face of the long thin-wall part respectively; a first fixing groove provided with a first fixing device, a second fixing groove provided with a second fixing device, a first mounting groove communicated with the first fixing groove and a second mounting groove communicated with the second fixing groove are formed in the two ends of the base respectively. The first mounting block is conveniently fixed in the first mounting groove through the first fixing device, and the second mounting block is fixed in the second mounting groove through the second fixing device, so that the clamping effect of the long thin-wall part is guaranteed, clamping deformation of the long thin-wall part is avoided, and the appearance quality of a product is guaranteed; at least one supporting groove is formed in the middle of the base, the floating supporting device is arranged in the supporting groove, the middle suspended part of the long thin-wall part is supported in a floating mode, machining vibration is reduced, and machining precision and machining quality are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical processing technical field especially relates to a clamp suitable for long thin wall part. BACKGROUND

[0002] If the conventional vice is used to clamp the part, the clamping deformation is caused, or the vibration of the suspended part is caused, the appearance quality of the product is caused to be poor, and if the product is not clamped on the reference surface, the clamping is slightly inclined, and the size is caused to be out of tolerance. INNOVATION CONTENT

[0003] In view of the problems that the appearance quality of the product is poor and the size is out of tolerance when the conventional vice is used to clamp the long thin wall part in the prior art, the utility model provides a clamp suitable for long thin wall part.

[0004] The utility model relates to a clamp suitable for long thin wall part for clamping and fixing long thin wall part, which comprises a base, a first fixing device, a second fixing device and at least one floating support device, the base is provided with a first fixing groove and a second fixing groove at both ends, the first fixing device is arranged in the first fixing groove, the second fixing device is arranged in the second fixing groove, the first installation groove is arranged on the inner side of the first fixing groove in the width direction of the base, the first fixing groove is communicated with the first installation groove, the second installation groove is arranged on the inner side of the second fixing groove in the width direction of the base, the second fixing groove is communicated with the second installation groove, at least one support groove is arranged in the middle of the base, at least one floating support device corresponds to at least one support groove, and at least one floating support device is arranged in the corresponding support groove; the bottom surface of the long thin wall part is provided with a first mounting block and a second mounting block at both ends; when the clamp is in working condition, the first mounting block is fixed in the first installation groove by the first fixing device, the second mounting block is fixed in the second installation groove by the second fixing device, and at least one floating support device is in contact with the bottom surface of the long thin wall part.

[0005] Preferably, the first fixing device comprises a first fixing block, a second fixing block, a first driving block and a first driving member, the first driving block gradually decreases in cross-sectional area from one end away from the first fixing slot to one end close to the first fixing slot, the first fixing block and the second fixing block are respectively located on two sides of the first driving block, the first driving block is provided with a first fixing protrusion on the inclined side close to the first fixing block, the first fixing block is provided with a first fixing groove on the inclined side close to the first driving block, the first fixing groove is matched with the first fixing protrusion, the side of the first fixing block away from the first driving block is attached to the side of the first mounting block close to the first fixing block, the side of the first mounting block away from the first fixing block is attached to the groove wall surface of the first mounting slot, the first driving block is provided with a second fixing protrusion on the inclined side close to the second fixing block, the second fixing block is provided with a second fixing groove on the inclined side close to the first driving block, the second fixing groove is matched with the second fixing protrusion, the side of the second fixing block away from the first driving block is attached to the groove wall surface of the first fixing slot, the first driving block is provided with a first driving slot at the center position, the first driving slot is provided with a first driving hole on the groove bottom surface, the first fixing slot is provided with a first fixing mounting hole at the position corresponding to the first driving hole on the groove bottom surface, and the first driving member is connected with the first fixing mounting hole after sequentially passing through the first driving slot and the first driving hole.

[0006] Further, the first fixing protrusion gradually decreases in cross-sectional area from one side close to the first fixing block to one side away from the first fixing block, and the second fixing protrusion gradually decreases in cross-sectional area from one side close to the second fixing block to one side away from the second fixing block.

[0007] Further, the second fixing device comprises a third fixing block, a fourth fixing block, a second driving block and a second driving member, the second driving block gradually decreases in cross-sectional area from one end away from the second fixing slot to one end close to the second fixing slot, the third fixing block and the fourth fixing block are respectively located on two sides of the second driving block, the second driving block is provided with a third fixing protrusion on the inclined side close to the third fixing block, the third fixing block is provided with a third fixing groove on the inclined side close to the second driving block, the third fixing groove is matched with the third fixing protrusion, the side of the third fixing block away from the second driving block is attached to the side of the second mounting block close to the third fixing block, the side of the second mounting block away from the third fixing block is attached to the groove wall surface of the second mounting slot, the second driving block is provided with a fourth fixing protrusion on the inclined side close to the fourth fixing block, the fourth fixing block is provided with a fourth fixing groove on the inclined side close to the second driving block, the fourth fixing groove is matched with the fourth fixing protrusion, the side of the fourth fixing block away from the second driving block is attached to the groove wall surface of the second fixing slot, the second driving block is provided with a second driving slot at the center position, the second driving slot is provided with a second driving hole on the groove bottom surface, the second fixing slot is provided with a second fixing mounting hole at the position corresponding to the second driving hole on the groove bottom surface, and the second driving member is connected with the second fixing mounting hole after sequentially passing through the second driving slot and the second driving hole.

[0008] Further, at least one of the two side surfaces of the second mounting block extending along the width direction of the base is fitted with the groove wall surface of the second mounting groove.

[0009] Preferably, the at least one support groove each comprises a mounting portion and an anti-interference portion, the mounting portion is located at the inner side of the anti-interference portion belonging to the same support groove, the mounting portion and the anti-interference portion belonging to the same support groove are communicated, and the at least one floating support device is fixed in the corresponding mounting portion.

[0010] Further, the at least one floating support device each comprises a housing, a floating support shaft, a floating adjusting spring, a spring sleeve and a locking member, the housing is fixed in the corresponding mounting portion, the middle part of the housing is provided with a receiving groove, the side wall of the housing is provided with a locking hole at the position corresponding to the corresponding anti-interference portion, the locking hole is communicated with the receiving groove located on the same housing, the floating adjusting spring, the floating support shaft belonging to the same floating support device are sequentially arranged in the receiving groove from bottom to top, the lower end of the floating support shaft is in contact with the floating adjusting spring belonging to the same floating support device, the upper end of the floating support shaft is located outside the receiving groove, the spring sleeve is located in the receiving groove of the housing belonging to the same floating support device, and the spring sleeve is sleeved on the side wall of the floating support shaft located in the same receiving groove, and the locking member is in contact with the spring sleeve belonging to the same floating support device after sequentially passing through the corresponding anti-interference portion and the locking hole.

[0011] Still further, the housing is further provided with a plurality of floating support mounting grooves, the groove bottom surface of the plurality of floating support mounting grooves is provided with a floating support mounting hole, the bottom surface of the mounting portion is provided with a floating support fixing hole at the position corresponding to the floating support mounting hole of the corresponding housing, and the floating support mounting groove is connected with the floating support mounting hole and the floating support fixing hole through a floating support connecting member; the spring sleeve is made of spring steel.

[0012] Preferably, the middle part of the first mounting block is provided with a first cavity, and the middle part of the second mounting block is provided with a second cavity.

[0013] Compared with the prior art, the present invention provides a fixture suitable for long, thin-walled parts. By setting a first mounting block and a second mounting block at both ends of the bottom surface of the long, thin-walled part, and by setting a first fixing groove with a first fixing device, a second fixing groove with a second fixing device, a first mounting groove communicating with the first fixing groove, and a second mounting groove communicating with the second fixing groove at both ends of the base, it is easy to fix the first mounting block in the first mounting groove using the first fixing device and the second mounting block in the second mounting groove using the second fixing device. This ensures the clamping effect of the long, thin-walled part and prevents deformation of the part during clamping, thus guaranteeing the product's appearance quality. Furthermore, by setting at least one support groove in the middle of the base and installing a floating support device within the support groove, the suspended middle portion of the long, thin-walled part is supported by floating support, reducing processing vibration and improving processing accuracy and quality. Attached Figure Description

[0014] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the structure of a clamp suitable for long, thin-walled parts according to an embodiment of the present invention.

[0016] Figure 2 for Figure 1 A frontal view of the structure.

[0017] Figure 3 for Figure 2 A cross-sectional view along the AA direction.

[0018] Figure 4 for Figure 2 A cross-sectional view along the BB direction.

[0019] Figure 5 for Figure 2 A sectional view along the CC direction.

[0020] Figure 6 This is a structural schematic diagram of a long, thin-walled part according to an embodiment of the present invention.

[0021] Figure 7 This is a schematic diagram of the base according to an embodiment of the present invention.

[0022] Figure 8 This is a schematic diagram of the structure of the first fixing device according to an embodiment of the present invention.

[0023] Figure 9 Figure 1 is a structural schematic diagram of a floating support device according to an embodiment of the present application. DETAILED DESCRIPTION

[0024] In order to further understand the purpose, structure, characteristics and functions of the present application, the following detailed description is provided in conjunction with the embodiments.

[0025] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0026] Please refer to Figures 1 to 7 The present application discloses a clamp 100 suitable for long and thin wall parts, which is used for clamping and fixing long and thin wall parts 200.

[0027] The clamp 100 comprises a base 10, a first fixing device 20, a second fixing device 30, and at least one floating support device 40. The base 10 is provided with a first fixing groove 11 and a second fixing groove 12 at both ends respectively. The first fixing device 20 is arranged in the first fixing groove 11, and the second fixing device 30 is arranged in the second fixing groove 12. The base 10 is provided with a first mounting groove 13 at a position inside the first fixing groove 11 in the width direction, and the first fixing groove 11 is in communication with the first mounting groove 13. The base 10 is provided with a second mounting groove 14 at a position inside the second fixing groove 12 in the width direction, and the second fixing groove 12 is in communication with the second mounting groove 14. The base 10 is provided with at least one support groove 15 in the middle part, and at least one floating support device 40 corresponds to at least one support groove 15 one by one. The at least one floating support device 40 is arranged in the corresponding support groove 15.

[0028] The bottom surface of the long and thin wall part 200 is provided with a first mounting block 201 and a second mounting block 202 at both ends respectively.

[0029] When the clamp 100 is in a working state, the first mounting block 201 is fixed in the first mounting groove 13 by the first fixing device 20, the second mounting block 202 is fixed in the second mounting groove 14 by the second fixing device 30, and the at least one floating support device 40 is in contact with the bottom surface of the long and thin wall part 200.

[0030] The fixture suitable for long and thin wall parts of the embodiment is characterized in that the first mounting block 201 and the second mounting block 202 are respectively arranged at both ends of the bottom surface of the long and thin wall part 200, the first fixing groove 11 provided with the first fixing device 20, the second fixing groove 12 provided with the second fixing device 30, the first mounting groove 13 communicated with the first fixing groove 11, and the second mounting groove 14 communicated with the second fixing groove 12 are respectively arranged at both ends of the base 10, the first mounting block 201 is fixed in the first mounting groove 13 through the first fixing device 20, the second mounting block 202 is fixed in the second mounting groove 14 through the second fixing device 30, the clamping effect of the long and thin wall part 200 is ensured, and the clamping deformation of the long and thin wall part 200 is avoided, so that the appearance quality of the product is ensured; at least one supporting groove 15 is arranged at the middle of the base 10, and the floating supporting device 40 is arranged in the supporting groove 15, the floating support is adopted for the middle suspended part of the long and thin wall part 200, the machining vibration is reduced, and the machining precision and quality are improved.

[0031] Please refer to Figure 1 、 Figure 3 、 Figure 4 、 Figure 7 and Figure 8 , the first fixing device 20 includes the first fixing block 21, the second fixing block 22, the first driving block 23 and the first driving piece 24, the cross-sectional area of the first driving block 23 gradually decreases from the end far away from the first fixing groove 11 to the end close to the first fixing groove 11, and the first fixing block 21 and the second fixing block 22 are respectively located at both sides of the first driving block 23.

[0032] The first fixing protrusion 231 is arranged on the inclined side of the first driving block 23 close to the first fixing block 21, the first fixing groove 211 is arranged on the inclined side of the first fixing block 21 close to the first driving block 23, the first fixing groove 211 is matched with the first fixing protrusion 231, the side of the first fixing block 21 far away from the first driving block 23 is attached to the side of the first mounting block 201 close to the first fixing block 21, and the side of the first mounting block 201 far away from the first fixing block 21 is attached to the groove wall surface of the first mounting groove 13, so as to fix the first mounting block 201 in the first mounting groove 13.

[0033] The second fixing protrusion 232 is arranged on the inclined side of the first driving block 23 close to the second fixing block 22, the second fixing groove 221 is arranged on the inclined side of the second fixing block 22 close to the first driving block 23, the second fixing groove 221 is matched with the second fixing protrusion 232, and the side of the second fixing block 22 far away from the first driving block 23 is attached to the groove wall surface of the first fixing groove 11, so as to ensure the fixing effect of the first mounting block 201.

[0034] The first driving block 23 is provided with a first driving groove 233 at the center position, and the first driving hole 234 is arranged on the groove bottom surface of the first driving groove 233. The first fixed mounting hole 111 is arranged on the groove bottom surface of the first fixed groove 11 at the position corresponding to the first driving hole 234. The first driving piece 24 is connected with the first fixed mounting hole 111 after sequentially passing through the first driving groove 233 and the first driving hole 234, so as to drive the first driving block 23 to move the first fixed block 21 and the second fixed block 22 to loosen or clamp the first mounting block 201 through the up-down movement of the first driving piece 24.

[0035] In actual use, the first driving piece 24 is threadedly connected with the first fixed mounting hole 111. The first driving piece 24 is a bolt.

[0036] In order to ensure the driving effect of the first driving block 23 on the first fixed block 21 and the second fixed block 22, the first fixed protrusion 231 gradually decreases in cross-sectional area from the side close to the first fixed block 21 to the side away from the first fixed block 21, and the second fixed protrusion 232 gradually decreases in cross-sectional area from the side close to the second fixed block 22 to the side away from the second fixed block 22. In this way, the first fixed groove 211 matched with the first fixed protrusion 231 gradually increases in cross-sectional area from the side away from the first driving block 23 to the side close to the first driving block 23, and the second fixed groove 221 matched with the second fixed protrusion 232 gradually increases in cross-sectional area from the side away from the first driving block 23 to the side close to the first driving block 23.

[0037] The second fixing device 30 adopts the same or similar structure as the first fixing device 20. Please refer to Figure 1 、 Figure 3 and Figure 7 , the second fixing device 30 includes a third fixed block 31, a fourth fixed block 32, a second driving block 33, and a second driving piece 34. The second driving block 33 gradually decreases in cross-sectional area from the end away from the second fixed groove 12 to the end close to the second fixed groove 12. The third fixed block 31 and the fourth fixed block 32 are respectively located on the two sides of the second driving block 33.

[0038] The second driving block 33 is provided with a third fixed protrusion 331 on the inclined side surface close to the third fixed block 31. The third fixed block 31 is provided with a third fixed groove 311 on the inclined side surface close to the second driving block 33. The third fixed groove 311 is matched with the third fixed protrusion 331. The side surface of the third fixed block 31 away from the second driving block 33 is matched with the side surface of the second mounting block 202 close to the third fixed block 31. The side surface of the second mounting block 202 away from the third fixed block 31 is matched with the groove wall surface of the second mounting groove 14, so as to fix the second mounting block 202 in the second mounting groove 14.

[0039] The fourth fixed protrusion 332 is arranged on the inclined side of the second driving block 33 close to the fourth fixed block 32, the fourth fixed groove 321 is arranged on the inclined side of the fourth fixed block 32 close to the second driving block 33, the fourth fixed groove 321 is matched with the fourth fixed protrusion 332, and the side of the fourth fixed block 32 away from the second driving block 33 is matched with the groove wall surface of the second fixed groove 12, so as to ensure the fixing effect of the second mounting block 202.

[0040] The second driving groove 333 is arranged at the center position of the second driving block 33, the second driving hole (not shown in the figure) is arranged on the groove bottom surface of the second driving groove 333, the second fixed mounting hole 121 is arranged on the groove bottom surface of the second fixed groove 12 at the position corresponding to the second driving hole, and the second driving member 34 is connected with the second fixed mounting hole 121 after sequentially penetrating through the second driving groove 333 and the second driving hole, so as to drive the first driving block 23 to move the third fixed block 31 and the fourth fixed block 32 to loosen or clamp the second mounting block 202 through the up-down movement of the second driving member 34.

[0041] In actual use, the second driving member 34 is threadedly connected with the second fixed mounting hole 121, and the second driving member 34 is a bolt.

[0042] In order to ensure the driving effect of the second driving block 33 on the third fixed block 31 and the fourth fixed block 32, the third fixed protrusion 331 gradually decreases in cross-sectional area from the side close to the third fixed block 31 to the side away from the third fixed block 31, and the fourth fixed protrusion 332 gradually decreases in cross-sectional area from the side close to the fourth fixed block 32 to the side away from the fourth fixed block 32. In this way, the third fixed groove 311 matched with the third fixed protrusion 331 gradually increases in cross-sectional area from the side away from the second driving block 33 to the side close to the second driving block 33, and the fourth fixed groove 321 matched with the fourth fixed protrusion 332 gradually increases in cross-sectional area from the side away from the second driving block 33 to the side close to the second driving block 33.

[0043] The first fixed device 20 and the second fixed device 30 can prevent the long and thin part 200 from moving in the width direction of the base 10, and in order to prevent the long and thin part 200 from moving in the length direction of the base 10, please refer to Figure 3 at least one of the two sides of the first mounting block 201 extending in the width direction of the base 10 is matched with the groove wall surface of the first mounting groove 13. In this way, all reference surfaces of the long and thin part 200 can be clamped, so that the long and thin part 200 will not tilt and move during processing, and the processing precision and quality are ensured.

[0044] In order to ensure the normal use of the floating support device 40, please refer to Figure 1 , Figure 3 or Figure 7, the at least one support groove 15 comprises an installation portion 151 and an interference prevention portion 152, the installation portion 151 is located at the inner side of the interference prevention portion 152 belonging to the same support groove 15, the installation portion 151 and the interference prevention portion 152 belonging to the same support groove 15 are communicated, and the at least one floating support device 40 is fixed in the corresponding installation portion 151.

[0045] Please refer to Figure 1 , Figure 3 , Figure 5 and Figure 9 , the at least one floating support device 40 comprises a shell 41, a floating support shaft 42, a floating adjusting spring 43, a spring sleeve 44 and a locking piece 45, the shell 41 is fixed in the corresponding installation portion 151, the middle part of the shell 41 is provided with a receiving groove 411, the side wall of the shell 41 is provided with a locking hole 412 at the position corresponding to the corresponding interference prevention portion 152, the locking hole 412 is communicated with the receiving groove 411 located on the same shell 41, the floating adjusting spring 43 and the floating support shaft 42 belonging to the same floating support device 40 are sequentially arranged in the receiving groove 411 from bottom to top, the lower end of the floating support shaft 42 is in contact with the floating adjusting spring 43 belonging to the same floating support device 40, the upper end of the floating support shaft 42 is located outside the receiving groove 411, the spring sleeve 44 is located in the receiving groove 411 of the shell 41 belonging to the same floating support device 40, and the spring sleeve 44 is sleeved on the side wall of the floating support shaft 42 located in the same receiving groove 411, the locking piece 45 is in contact with the spring sleeve 44 belonging to the same floating support device 40 after sequentially penetrating through the corresponding interference prevention portion 152 and the locking hole 412, so that the spring sleeve 44 tightly holds the floating support shaft 42 through the locking piece 45, thereby ensuring the supporting effect on the long and thin part 200.

[0046] Preferably, the spring sleeve 44 is made of spring steel.

[0047] In order to ensure the fixing effect of the shell 41 in the installation portion 151 and prevent the support on the long and thin part 200 from being affected, a plurality of floating support installation grooves 413 are further provided on the shell 41, the floating support installation grooves 413 are provided with floating support installation holes 414 on the groove bottom surfaces, the bottom surface of the installation portion 151 is provided with floating support fixing holes 1511 at positions corresponding to the floating support installation holes 414 of the corresponding shell 41, and the floating support installation grooves 413 are connected with the floating support installation holes 414 and the floating support fixing holes 1511 through floating support connecting pieces 46.

[0048] In actual use, the floating support connecting piece 46 is a bolt, and the floating support connecting piece 46 is threadedly connected with the floating support fixing hole 1511.

[0049] When the first mounting block 201 and the second mounting block 202 are not part of the final long thin-walled part, in order to facilitate the first mounting block 201 and the second mounting block 202 are cut from the long thin-walled part 200, please see Figure 3 , the middle part of the first mounting block 201 is provided with a first cavity 2011, and the middle part of the second mounting block 202 is provided with a second cavity 2021.

[0050] The working process is as follows: Figure 1 and Figure 3 As shown, first, the first mounting block 201 and the second mounting block 202 of the bottom surface of the long thin-walled part 200 are respectively placed in the first mounting groove 13 and the second mounting groove 14, and the middle part of the long thin-walled part 200 is in contact with the floating support device 40; then, the position of the long thin-walled part 200 is adjusted, so that at least one of the two side surfaces of the second mounting block 202 extending along the width direction of the base 10 is in close contact with the groove wall surface of the second mounting groove 14, and the first mounting block 201 is fixed in the first mounting groove 13 by the first fixing device 20, the second mounting block 202 is fixed in the second mounting groove 14 by the second fixing device 30, and the elastic sleeve 44 is tightly wrapped around the floating support shaft 42 by the locking piece 45, so that the clamping and supporting of the long thin-walled part 200 are completed.

[0051] The utility model relates to a clamp suitable for long thin-walled part, first mounting block and second mounting block are arranged at the both ends of the bottom surface of long thin-walled part respectively, first fixed groove with first fixing device, second fixed groove with second fixing device, first mounting groove in communication with first fixed groove and second mounting groove in communication with second fixed groove are arranged at the both ends of base respectively, first mounting block is fixed in first mounting groove through first fixing device, second mounting block is fixed in second mounting groove through second fixing device, the clamping effect of long thin-walled part is guaranteed, and long thin-walled part clamping deformation is not caused, and the appearance quality of product is guaranteed, at least one supporting groove is arranged in the middle part of base, and floating support device is arranged in supporting groove, and the floating support is used to the middle part of long thin-walled part, processing vibration is reduced, and processing precision and processing quality are improved.

[0052] The utility model has been described by the above related embodiment, however, the above embodiment is only the example of implementation of the utility model. In addition, the technical features involved in the different embodiments of the utility model described above can be combined with each other as long as they do not conflict with each other. It must be pointed out that the disclosed embodiments do not limit the scope of the utility model. On the contrary, modifications and improvements made without departing from the spirit and scope of the utility model are within the scope of patent protection of the utility model.

Claims

1. A jig for a long thin-walled part, for clamping and fixing a long thin-walled part, characterized by, The clamp comprises a base, a first fixing device, a second fixing device, and at least one floating support device, two ends of the base are respectively provided with a first fixing groove and a second fixing groove, the first fixing device is arranged in the first fixing groove, the second fixing device is arranged in the second fixing groove, a position inside the first fixing groove in the width direction of the base is provided with a first mounting groove, the first fixing groove and the first mounting groove are in communication, a position inside the second fixing groove in the width direction of the base is provided with a second mounting groove, the second fixing groove and the second mounting groove are in communication, a middle part of the base is provided with at least one support groove, the at least one floating support device corresponds to the at least one support groove one by one, and the at least one floating support device is arranged in the corresponding support groove. The bottom surface of the long and thin wall part is respectively provided with a first mounting block and a second mounting block at two ends. When the clamp is in a working state, the first mounting block is fixed in the first mounting groove by the first fixing device, the second mounting block is fixed in the second mounting groove by the second fixing device, and the at least one floating support device abuts against the bottom surface of the long and thin wall part.

2. A fixture for long thin-walled parts as claimed in claim 1, characterized in that The first fixing device comprises a first fixing block, a second fixing block, a first driving block and a first driving member, the first driving block gradually decreases in cross-sectional area from one end away from the first fixing groove to one end close to the first fixing groove, the first fixing block and the second fixing block are respectively located on two sides of the first driving block, a first fixing protrusion is arranged on the inclined side of the first driving block close to the first fixing block, a first fixing groove is arranged on the inclined side of the first fixing block close to the first driving block, the first fixing groove is matched with the first fixing protrusion, the side of the first fixing block away from the first driving block is attached to the side of the first mounting block close to the first fixing block, the side of the first mounting block away from the first fixing block is attached to the groove wall surface of the first mounting groove, a second fixing protrusion is arranged on the inclined side of the first driving block close to the second fixing block, a second fixing groove is arranged on the inclined side of the second fixing block close to the first driving block, the second fixing groove is matched with the second fixing protrusion, the side of the second fixing block away from the first driving block is attached to the groove wall surface of the first fixing groove, a first driving groove is arranged at the center position of the first driving block, a first driving hole is arranged on the groove bottom surface of the first driving groove, a first fixing mounting hole is arranged on the groove bottom surface of the first fixing groove at a position corresponding to the first driving hole, and the first driving member is connected with the first fixing mounting hole after sequentially passing through the first driving groove, the first driving hole.

3. A fixture for long thin-walled parts as claimed in claim 2, characterized in that The first fixing protrusion gradually decreases in cross-sectional area from one side close to the first fixing block to one side away from the first fixing block, and the second fixing protrusion gradually decreases in cross-sectional area from one side close to the second fixing block to one side away from the second fixing block.

4. The fixture of claim 2, wherein, The second fixing device comprises a third fixing block, a fourth fixing block, a second driving block and a second driving member, the second driving block gradually decreases in cross-sectional area from one end away from the second fixing groove to one end close to the second fixing groove, the third fixing block and the fourth fixing block are respectively located on two sides of the second driving block, a third fixing protrusion is arranged on the inclined side of the second driving block close to the third fixing block, a third fixing groove is arranged on the inclined side of the third fixing block close to the second driving block, the third fixing groove is matched with the third fixing protrusion, the side of the third fixing block away from the second driving block is attached to the side of the second mounting block close to the third fixing block, the side of the second mounting block away from the third fixing block is attached to the groove wall surface of the second mounting groove, a fourth fixing protrusion is arranged on the inclined side of the second driving block close to the fourth fixing block, a fourth fixing groove is arranged on the inclined side of the fourth fixing block close to the second driving block, the fourth fixing groove is matched with the fourth fixing protrusion, the side of the fourth fixing block away from the second driving block is attached to the groove wall surface of the second fixing groove, a second driving groove is arranged at the center position of the second driving block, a second driving hole is arranged on the groove bottom surface of the second driving groove, a second fixing mounting hole is arranged on the groove bottom surface of the second fixing groove at a position corresponding to the second driving hole, and the second driving member is connected with the second fixing mounting hole after sequentially penetrating through the second driving groove and the second driving hole.

5. A fixture suitable for long thin-walled parts as claimed in claim 4, characterized in that At least one of the two sides of the first mounting block extending along the width direction of the base is attached to the groove wall surface of the first mounting groove.

6. The fixture of claim 1, wherein, The at least one support groove comprises a mounting portion and an anti-interference portion, the mounting portion is located on the inner side of the anti-interference portion belonging to the same support groove, the mounting portion and the anti-interference portion belonging to the same support groove are communicated, and the at least one floating support device is fixed in the corresponding mounting portion.

7. A fixture suitable for long thin-walled parts as claimed in claim 6, characterized in that The at least one floating support device comprises a shell, a floating support shaft, a floating adjusting spring, a spring sleeve and a locking member, the shell is fixed in the corresponding mounting portion, a containing groove is arranged at the middle part of the shell, a locking hole is arranged on the side wall of the shell at a position corresponding to the corresponding anti-interference portion, the locking hole is communicated with the containing groove on the same shell, the floating adjusting spring and the floating support shaft belonging to the same floating support device are sequentially arranged in the containing groove from bottom to top, the lower end of the floating support shaft is in contact with the floating adjusting spring belonging to the same floating support device, the upper end of the floating support shaft is located outside the containing groove, the spring sleeve is located in the containing groove of the shell belonging to the same floating support device, and the spring sleeve is sleeved on the side wall of the floating support shaft in the same containing groove, and the locking member is in contact with the spring sleeve belonging to the same floating support device after sequentially penetrating through the corresponding anti-interference portion and the locking hole.

8. A fixture suitable for long thin-walled parts as claimed in claim 7, characterized in that The shell is also provided with a plurality of floating support installation grooves, the groove bottom surface of each of the plurality of floating support installation grooves is provided with a floating support installation hole, the bottom surface of the installation part is provided with a floating support fixing hole at a position corresponding to the floating support installation hole of the corresponding shell, and the floating support installation groove is connected with the floating support installation hole and the floating support fixing hole thereof through a floating support connecting piece.

9. The fixture of claim 7, wherein, The elastic sleeve is made of spring steel.

10. The fixture of claim 1, wherein, The middle part of the first mounting block is provided with a first cavity, and the middle part of the second mounting block is provided with a second cavity.

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