Anti-deformation clamping device for thin-wall metal part machining

Abstract

The application relates to the field of metal thin-wall part machining, in particular to a thin-wall metal part machining anti-deformation clamping device, which comprises a base and a clamp, the clamp is installed on the base, the clamp comprises a first positioning block and a clamping mechanism, a clamping groove is formed between the first positioning block and the clamping mechanism, a workpiece can be completely inserted into the clamping groove, the clamping mechanism comprises a second positioning block, a third positioning block and a driving assembly, guide grooves matched with the second positioning block and the third positioning block are respectively arranged on the base. The first positioning block, the second positioning block and the third positioning block have a large enough contact area with the workpiece when the workpiece is completely inserted into the clamping groove, so that the possibility of deformation of the workpiece is reduced, and the machining quality is guaranteed.

Description

Technical Field

[0001] This application relates to the technical field of metal thin-walled parts processing, and in particular to a deformation-preventing clamping device for processing thin-walled metal parts. Background Technology

[0002] Thin-walled metal parts often face deformation issues during machining, primarily due to their relatively poor rigidity and strength. Factors such as thermal stress make these parts prone to deformation during processing, leading to increased form and position errors and severely impacting the machining quality.

[0003] Because the thickness of thin-walled parts is much smaller than other dimensions (length, width), their resistance to external forces is extremely low, resulting in poor bending resistance and weak torsional resistance. In the related technologies for machining thin-walled metal parts, when positioning and clamping metal parts using fixtures, problems such as unreasonable selection of positioning and clamping points, insufficient contact area between the fixture and the part, excessive or uneven clamping force often cause deformation of the parts, affecting the machining quality of thin-walled metal parts. Utility Model Content

[0004] In order to reduce the possibility of deformation of thin-walled metal parts during positioning and clamping and to ensure processing quality, this application provides a deformation-resistant clamping device for processing thin-walled metal parts.

[0005] The technical solution of the anti-deformation clamping device for processing thin-walled metal parts provided in this application is as follows:

[0006] A clamping device for preventing deformation during the processing of thin-walled metal parts is provided for positioning and clamping L-shaped thin-walled metal parts. It includes a base and a clamp, the clamp being mounted on the base. The clamp includes a first positioning block and a clamping mechanism, with a clamping groove formed between the first positioning block and the clamping mechanism, allowing the workpiece to be fully inserted into the clamping groove. The clamping mechanism includes a second positioning block, a third positioning block, and a driving assembly. Guide grooves that cooperate with the second and third positioning blocks are respectively provided on the base. Under the action of the driving assembly, the second and third positioning blocks can slide along their respective guide grooves in a horizontal plane to clamp or release the workpiece within the clamping groove.

[0007] Optionally, the second positioning block is provided with a transmission component, and the driving end of the driving component is provided with a protrusion. The protrusion cooperates with the transmission component so that when the driving end moves, it drives the second positioning block away from the workpiece along the guide groove.

[0008] Optionally, the second positioning block is provided with a wedge-shaped groove, and the third positioning block is provided with a sliding member, which is fitted into the wedge-shaped groove.

[0009] Optionally, the drive assembly includes a driver and a turntable, the turntable being rotatably mounted below the base, the driver being connected to the turntable so that the turntable can rotate along the central axis, and the protrusion being formed on the outer peripheral surface of the turntable.

[0010] Optionally, the driving component further includes a first elastic element, wherein the second positioning block and the base and the third positioning block and the base are respectively provided with a first elastic element, and the deformation direction of the two first elastic elements is the same as the sliding direction of the second positioning block and the third positioning block, respectively.

[0011] Optionally, the base has a mounting hole corresponding to the position of the first positioning block, and a second elastic element is provided in the mounting hole. The second elastic element extends in the vertical direction, and the first positioning block is connected to the second elastic element, so that the first positioning block can move in the vertical plane.

[0012] Optionally, the lower side of the first positioning block facing the second and third positioning blocks is provided with a horizontally extending snap-fit ​​portion, and the second and third positioning blocks are respectively provided with corresponding snap-fit ​​grooves, and the lower end of the workpiece abuts against the snap-fit ​​portion.

[0013] In summary, this application includes at least one of the following beneficial technical effects:

[0014] 1. Through the coordinated arrangement of the base, the first positioning block and the clamping mechanism, the clamping groove is formed between the first positioning block and the clamping mechanism. When the workpiece is fully inserted into the clamping groove, the first positioning block, the second positioning block and the third positioning block have a sufficiently large contact area with the workpiece. The workpiece is clamped by the deformation force of the first elastic element, which can avoid the problem of excessive clamping force, thereby reducing the possibility of workpiece deformation and ensuring its processing quality. Attached Figure Description

[0015] Figure 1 This is a top view of an embodiment of the present application.

[0016] Figure 2 This is a frontal cross-sectional structural diagram of an embodiment of this application.

[0017] Figure 3 This is a partial side view cross-sectional structural schematic diagram of an embodiment of this application.

[0018] Figure 4 This is another partial side view cross-sectional structural schematic diagram of an embodiment of this application.

[0019] Reference numerals: 01, base; 02, clamp; 3, first positioning block; 4, clamping mechanism; 41, second positioning block; 42, third positioning block; 43, drive assembly; 431, driver; 432, turntable; 5, transmission component; 6, protrusion; 7, sliding component; 8, first elastic component; 9, second elastic component; 10, snap-fit ​​part. Detailed Implementation

[0020] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0021] This application discloses a clamping device for preventing deformation during the processing of thin-walled metal parts, particularly for clamping and positioning L-shaped thin-walled metal parts. (Refer to...) Figure 1 A clamping device for preventing deformation during the processing of thin-walled metal parts includes a base 01 and clamps 02 disposed on the base 01. The clamps 02 have clamping grooves, the shape of which is L-shaped and adapted to the thin-walled metal parts. Multiple clamps 02 can be disposed on the base 01, each clamping a different thin-walled metal part. The clamps 02 are evenly spaced on the base 01. The base 01 is preferably a disc-shaped structure, with each clamp 02 positioned near its outer edge. In practical implementation, the base 01 can be connected to an external driving device, enabling the base 01 to rotate. When the base 01 rotates, it drives the clamps 02 and the clamped workpieces to rotate, thus achieving workpiece transfer between processing steps.

[0022] Reference Figure 1 and Figure 2 The fixture 02 includes a first positioning block 3 and a clamping mechanism 4. The clamping groove is formed between the first positioning block 3 and the clamping mechanism 4. The clamping mechanism 4 includes a drive assembly 43, a second positioning block 41, and a third positioning block 42. Guide grooves corresponding to the second positioning block 41 and the third positioning block 42 are respectively formed on the base 01. The second positioning block 41 and the third positioning block 42 are slidably connected to the base 01 through the corresponding guide grooves. The drive assembly 43 is used to drive the second positioning block 41 and the third positioning block 42 to slide in the horizontal plane. Preferably, the sliding direction of the second positioning block 41 and the third positioning block 42 is perpendicular to the side of the first positioning block 3 corresponding to them, so that the workpiece in the clamping groove can be clamped or released by the drive assembly 43.

[0023] It should be noted that the size of the face opposite to the first positioning block 3 of the second positioning block 41 should be larger than the side size of the workpiece in the clamping groove; the size of the face opposite to the first positioning block 3 of the third positioning block 42 should be larger than the side size of the workpiece in the clamping groove, so that the side of the workpiece can fully contact the first positioning block 3, the second positioning block 41 and the third positioning block 42. The larger contact area can prevent the workpiece from deforming when clamped.

[0024] Reference Figure 2 The drive assembly 43 includes a driver 431 and a turntable 432, wherein the turntable 432 is rotatably mounted below the base 01, and the driver 431 is connected to the turntable 432 to drive the turntable 432 to rotate relative to the base 01. The specific composition and arrangement of the driver 431 are common knowledge and will not be described in detail here. A protrusion 6 is provided on the outer peripheral surface of the turntable 432, and the protrusion 6 corresponds to the clamp 02 provided on the base 01. A transmission member 5 is provided on the second positioning block 41, one end of which extends to cooperate with the protrusion 6. The distance from the center of the turntable 432 to the farthest end of the protrusion 6 is greater than the distance to the nearest end of the transmission member 5.

[0025] With the above structure, when the driver 431 drives the turntable 432 to rotate, the protrusion 6 rotates with the turntable 432 and squeezes the transmission member 5 when passing through it, causing the transmission member 5 to move away from the center of the turntable 432. The transmission member 5 then further drives the second positioning block 41 to move away from the clamping groove.

[0026] Furthermore, a first elastic element 8 is provided between the base 01 and the second positioning block 41. When the second positioning block 41 moves away from the clamping groove, the first elastic element 8 is compressed. When the protrusion 6 rotates with the turntable 432 and passes through the transmission element 5, the first elastic element 8 recovers its deformation, driving the second positioning block 41 and the transmission element 5 back to their original positions, thus clamping the workpiece. Clamping the workpiece with the first elastic element 8 can prevent the workpiece from being deformed due to excessive clamping force.

[0027] Furthermore, the second positioning block 41 has a wedge-shaped groove, and the third positioning block 42 has a sliding member 7, which is fitted into the wedge-shaped groove. When the second positioning block 41 moves away from the clamping groove under the drive assembly 43, it squeezes and drives the sliding member 7, which in turn drives the third positioning block 42 to slide along the corresponding guide groove. It can be understood that the second positioning block 41 and the third positioning block 42 move in the same horizontal plane, and when the thin-walled metal part has an L-shaped structure, the direction of movement of the third positioning block 42 should be perpendicular to the direction of movement of the second positioning block 41.

[0028] A first elastic element 8 is also provided between the third positioning block 42 and the base 01. When the driving force of the driving component 43 on the second positioning block 41 disappears, the third positioning block 42 can also be reset under the action of the first elastic element 8. The deformation direction of the two first elastic elements 8 is the same as the movement direction of the second positioning block 41 and the third positioning block 42, respectively.

[0029] Reference Figure 4An installation hole is provided on the base 01 corresponding to the position of the first positioning block 3. The installation hole is located below the first positioning block 3 and is vertically arranged. A second elastic member 9 is installed in the installation hole. One end of the second elastic member 9 is fixed in the installation hole, and the other end abuts against the first positioning block 3. The length of the second elastic member 9 when it naturally extends is greater than the depth of the installation hole, so that the first positioning block 3 can move in the vertical plane.

[0030] Furthermore, a locking portion 10 is formed on the lower side of the first positioning block 3 facing the second positioning block 41 and the third positioning block 42. The locking portion 10 extends horizontally, and a locking groove is formed on the second positioning block 41 and the third positioning block 42, which is adapted to the locking portion 10. When the workpiece is placed in the clamping groove, the lower end of the workpiece abuts against the upper surface of the locking portion 10.

[0031] With the above structure, when no other force is applied, the second positioning block 41 and the third positioning block 42 are in a clamping state on the workpiece under the action of the first elastic member 8, and the locking part 10 extends into the slot. At this time, the first positioning block 3 is pressed to fit against the surface of the base 01, and the upper surfaces of the first positioning block 3, the second positioning block 41 and the third positioning block 42 are flush. When the drive assembly 43 drives the second positioning block 41 to move away from the clamping slot, the third positioning block 42 moves synchronously away from the clamping slot with the cooperation of the wedge-shaped slide and the sliding member 7. At this time, the locking part 10 gradually disengages from the slot, and then the second elastic member 9 restores its deformation, driving the first positioning block 3 to move upward, so that the height of the first positioning block 3 is higher than that of the second positioning block 41 and the third positioning block 42. The workpiece moves upward accordingly and is partially offset from the second positioning block 41 and the third positioning block 42 for easy handling.

[0032] This application provides a deformation-resistant clamping device for processing thin-walled metal parts. Through the coordinated arrangement of a base 01, a first positioning block 3, and a clamping mechanism 4, a clamping groove is formed between the first positioning block 3 and the clamping mechanism 4. When the workpiece is fully inserted into the clamping groove, the first positioning block 3, the second positioning block 41, and the third positioning block 42 have a sufficiently large contact area with the workpiece. The workpiece is clamped by the deformation force of the first elastic element 8, which avoids excessive clamping force, thereby reducing the possibility of workpiece deformation and ensuring its processing quality.

[0033] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A clamping device for preventing deformation during the processing of thin-walled metal parts, used for positioning and clamping L-shaped thin-walled metal parts, characterized in that: The device includes a base and a clamp. The clamp is mounted on the base and includes a first positioning block and a clamping mechanism. A clamping groove is formed between the first positioning block and the clamping mechanism, and the workpiece can be completely inserted into the clamping groove. The clamping mechanism includes a second positioning block, a third positioning block, and a driving component. Guide grooves that cooperate with the second and third positioning blocks are respectively provided on the base. The second and third positioning blocks can slide along the corresponding guide grooves in the horizontal plane under the action of the driving component to clamp or release the workpiece in the clamping groove.

2. The anti-deformation clamping device for thin-walled metal parts processing according to claim 1, characterized in that: The second positioning block is provided with a transmission component, and the driving end of the driving component is provided with a protrusion. The protrusion cooperates with the transmission component so that when the driving end moves, it drives the second positioning block away from the workpiece along the guide groove.

3. The anti-deformation clamping device for thin-walled metal parts processing according to claim 2, characterized in that: The second positioning block has a wedge-shaped groove, and the third positioning block has a sliding member that is fitted into the wedge-shaped groove.

4. The anti-deformation clamping device for thin-walled metal parts processing according to claim 2 or 3, characterized in that: The drive assembly includes a driver and a turntable. The turntable is rotatably mounted below the base. The driver is connected to the turntable, allowing the turntable to rotate along the central axis. The protrusion is formed on the outer circumferential surface of the turntable.

5. The anti-deformation clamping device for thin-walled metal parts processing according to claim 4, characterized in that: The driving component further includes a first elastic element. The second positioning block and the base are respectively provided with a first elastic element between them and the base. The deformation direction of the two first elastic elements is the same as the sliding direction of the second positioning block and the third positioning block, respectively.

6. The anti-deformation clamping device for thin-walled metal parts processing according to claim 1, characterized in that: The base has a mounting hole corresponding to the position of the first positioning block. A second elastic element is provided in the mounting hole. The second elastic element extends in the vertical direction. The first positioning block is connected to the second elastic element, so that the first positioning block can move in the vertical plane.

7. The anti-deformation clamping device for thin-walled metal parts processing according to claim 6, characterized in that: The first positioning block has horizontally extending locking parts on the lower side facing the second and third positioning blocks. The second and third positioning blocks are respectively provided with corresponding locking slots, and the lower end of the workpiece abuts against the locking parts.

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