Clamping device for clamp and clamp

Abstract

The utility model belongs to the field of clamps, and provides a clamping device for a clamp and the clamp, and the clamping device comprises a gripping hand, a driving device and a positioning pin. The gripping hand is in key connection with the driving device, the driving device provides axial force to fix a workpiece to be machined, and the positioning pin provides horizontal constraining force for the workpiece to be machined. Compared with the prior art, the novel clamping device for the clamp and the clamp have the advantages that aiming at the current situation of the prior art, the novel clamping device for the clamp which is convenient to mount and capable of machining the upper surface of the to-be-machined workpiece and the clamp are provided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of fixture, concretely relates to a clamping device for fixture and fixture. BACKGROUND

[0002] In the current market, there are various clamping devices for fixture and fixture, these devices generally adopt two ends clamping in vertical direction to ensure that workpieces keep fixed in vertical direction, prevent displacement or shaking due to stress, and ensure machining precision. However, for products needing to be machined on the upper surface, the clamping device on the market has obvious deficiencies in machining, has certain requirements for the structure and layout of equipment, and increases the complexity of machining. CONTENT OF THE UTILITY MODEL

[0003] The utility model solves the technical problem in the prior art, and provides a clamping device for fixture and fixture which can machine the upper surface of a workpiece to be machined and is convenient to install.

[0004] In order to solve the above problems, the utility model adopts the technical scheme that a clamping device for fixture comprises:

[0005] A grabbing hand is adapted to be connected with a driving device, wherein one side of the grabbing hand is provided with a connecting structure connected with the connecting part of the driving device, and the other side of the grabbing hand is provided with a grabbing structure, the product can be fixed axially through axial movement of the grabbing structure, a positioning pin also exists on the workpiece to be machined, the size of the positioning pin matches the size of the pin hole machined on the workpiece to be machined, and the positioning pin provides horizontal constraint force of the workpiece to be machined.

[0006] In the clamping device, the grabbing structure is provided with a through hole, and the size of the through hole matches the size of one end of the workpiece to be machined facing the driving device.

[0007] In the clamping device, the grabbing structure is trumpet-shaped, the central size gradually increases along the axial direction from one end close to the driving device to the upper end away from the driving device, and the part connected with the workpiece to be machined of the grabbing structure has elastic deformation function.

[0008] In the clamping device, the connecting structure and the connecting part of the driving device adopt detachable connection in the horizontal direction fixed in the axial direction, so that the connection can be conveniently detached, and also can bear larger load in the axial direction.

[0009] In the above clamping device, the connecting part of the clamping mechanism and the workpiece to be processed is also connected with a support table, the connecting part of the support table and the workpiece to be processed is provided with a boss, the boss is used for fixing the position with the positioning pin, the workpiece to be processed is horizontally placed for processing, the lower end of the axial direction of the support table is connected with a shell, the size of the shell matches the size of the support table, and the shell and the support table are connected through fasteners.

[0010] Since the connection through fasteners inevitably causes gaps, in order to effectively prevent the circumferential displacement of the shell on the horizontal plane during the work process, a through hole is arranged at the end of the shell away from the ground, the through hole penetrates through the whole shell, and the size of the through hole is accurately matched with the size of the inserted positioning pin. The upper end and the side wall of the positioning pin are both provided with threaded holes, and the side wall of the part close to the ground of the shell is also provided with a threaded hole. By connecting a nut at the threaded hole of the side wall of the positioning pin, the axial position of the positioning pin is fixed. When the shell is disassembled, a nut with a size matched with the threaded hole of the upper end is screwed into the upper end of the positioning pin, which greatly facilitates the disassembly process.

[0011] In the above clamping device, the lower end of the axial direction of the support table is connected with a shell, and the upper end of the axial direction of the shell is connected with the support table through fasteners.

[0012] In the above clamping device, the horizontal end face of the shell is provided with a through hole, and an open hole positioning pin is connected at the through hole, the open hole positioning pin is radially provided with an open hole, and the radially open hole of the open hole positioning pin is connected with a nut.

[0013] The utility model also provides a clamp, which comprises:

[0014] The support column is two or more in number, when the support column is even in number, the support columns are symmetrically distributed, and when the support column is odd in number, the support columns are not located on the same straight line.

[0015] The shelf is connected with the shelf plate through fasteners.

[0016] The number of the clamping devices is two or more, and the clamping devices are evenly distributed and fixed on the shelf plate.

[0017] In the above clamp, the shelf is provided with a through hole at the connecting part with the driving device, the size of the through hole is matched with the size of the connecting part of the driving device, the upper end of the axial direction of the shelf is provided with a groove, the size of the groove is matched with the size of the shell, the shelf plate is further provided with waist-shaped holes, and the waist-shaped holes are distributed on the two sides of the clamping device, so that the clamping device is conveniently installed on the shelf plate.

[0018] A pull ring is arranged on the shelf plate, the number of the pull ring is not less than two, the pull ring is symmetrically distributed on the two sides of the shelf plate, and the pull ring is connected with the shelf plate through fasteners.

[0019] Compared with the prior art, the utility model has the beneficial effects of:

[0020] (1), the utility model provides a kind of clamping device, including grab hand, the grab hand of grab hand part is connected with the workpiece to be processed, and the connecting part of grab hand is connected with the connecting part of driving device, and the axial movement of driving device drives the workpiece to be processed to carry out single-side axial fixation, facilitate the upper surface of workpiece to be processed is processed.

[0021] (2), there is positioning pin on the workpiece to be processed, and the size of positioning pin is matched with the size of pin hole processed on the workpiece to be processed, and the positioning pin provides horizontal direction constraint force, can improve processing accuracy.

[0022] (3) grab hand structure is equipped with through hole, and the axial movement of driving device makes the axial fixation of workpiece to be processed, and the through hole is equipped to facilitate the better installation of workpiece to be processed.

[0023] (3), the workpiece to be processed is installed on the grab hand structure of grab hand, and the grab hand structure is horn-shaped and the part connected with the workpiece to be processed has certain elastic deformation function, and the axial movement of grab hand mechanism can better axially constrain the workpiece to be processed.

[0024] (4), the connecting structure and the connecting part of driving device adopt axial fixation and detachable connection in horizontal direction, facilitate disassembly, and can bear larger load in axial direction at the same time.

[0025] (5), through hole is connected with opening positioning pin on the shell, to effectively prevent the circumferential displacement of shell in horizontal plane at certain angle, and the side wall of opening positioning pin is opened, to facilitate the axial fixation of opening positioning pin.

[0026] (6), the through hole is equipped in the connecting place of the article placing plate and driving device, and the recess is equipped in the connecting place of article placing plate and shell, and the shell is placed in the recess and is connected with driving device through article placing plate, and installation is more stable. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is the partial explosion view of the utility model of a kind of clamping device.

[0028] Figure 2 It is the sectional view of the utility model of a kind of clamping device

[0029] Figure 3 It is the two-dimensional diagram of the utility model of a kind of clamp.

[0030] In the diagram, 1. Workpiece to be processed; 2. Locating pin; 3. Boss; 4. Support platform; 5. Outer shell; 6. Gripper; 61. Gripper structure; 62. Connecting structure; 7. Hole locating pin; 8. Nut; 9. Drive device; 10. Connecting part; 11. Pull ring; 12. Shelf; 13. Support column; 14. Groove. Detailed Implementation

[0031] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0032] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0033] like Figure 2 As shown, the clamping device provided by this utility model includes:

[0034] This utility model provides a clamping device for a fixture, including a gripper 6 and a driving device 9. The gripper 6 is adapted to be connected to the driving device 9. One side of the gripper 6 is provided with a connecting structure 62 connected to the connecting part 10 of the driving device, and the other side of the gripper 6 is provided with a gripping structure 61. By moving the gripping mechanism 61 downward in the axial direction, the workpiece 1 to be processed can be axially fixed.

[0035] The drive device 9 provides axial force. In the working state, the workpiece 1 to be processed is first placed on the boss 3, and the horizontal position of the workpiece 1 is fixed by the positioning pins 2. The number of positioning pins 2 corresponds one-to-one with the number of pin holes on the boss 3. The drive device 9 starts to move and provides axial downward force. The connecting structure 62 is connected to the connecting part 10, which is the force of the gripper 6 retracting vertically downward to the ground, providing an axial downward constraint force for the workpiece 1 to be processed, which facilitates the processing of the upper surface of the workpiece 1.

[0036] In this embodiment, the gripping structure 61 is provided with a through hole. The size of the through hole matches the size of the end of the workpiece 1 facing the driving device 9. Since the driving device 8 drives the clamping device to move axially, the workpiece 1 is fixed axially. Therefore, the clamping device is provided with a through hole in the axial direction, which makes it easier to load and unload the workpiece 1.

[0037] In the embodiment, the clamping structure 61 is trumpet-shaped, and the central size gradually increases along the axial direction from the end close to the driving device 9 to the other end away from the driving device 9. The other end of the clamping structure 61 away from the driving device 9 is connected to the part of the workpiece 1, and the axial tensile force provided by the driving device 9 acts on the elastic deformation function of the clamping structure 61 to complete the axial one-way fixed connection of the workpiece 1.

[0038] In the embodiment, the connection structure 62 of the clamping hand 6 and the connection part 10 of the driving device 9 are connected by axial fixation and horizontal detachable connection.

[0039] Preferably, the connection between the connection structure 62 of the clamping hand 6 and the connection part 10 of the driving device 9 is connected by axial fixation and horizontal detachable connection, which can bear a large load in the axial direction. In the case of processing different models of workpieces 1, the corresponding model of the clamping hand 6 can be replaced by horizontal disassembly to ensure the stability of the restraining force of the clamping hand 6 during processing the workpiece 1.

[0040] Further preferably, in the process of processing the workpiece 1, the connection between the connection structure 62 and the connection part 10 may be affected to a certain extent, causing a certain range of relative movement in the horizontal direction of the connection. A hole is opened in the radial position perpendicular to the connection direction of the connection, and a cylindrical positioning pin is inserted to fix the horizontal direction of the connection.

[0041] In order to ensure the safety and aesthetics of the clamping device structure, a support table 4 is further connected to the connection between the clamping structure 61 and the workpiece 1.

[0042] The support table 4 is connected to the clamping hand 6 in the axial direction to provide axial restraint for the workpiece 1 during processing. The lower surface of the support table 4 in the axial direction is further connected to an outer shell 5, and the outer shell 5 is connected to the support table 4 by fasteners.

[0043] Preferably, the upper surface of the support table 4 in the axial direction further has a boss 3 corresponding to the workpiece 1. The size of the boss 3 is the same as the size of the part of the positioning pin 2 protruding from the support table 4. The boss 3 fixes the axial position of the workpiece 1 and makes it higher than the upper surface of the support table 4 in the axial direction, facilitating the processing of the workpiece 1.

[0044] Further, the upper surface of the storage plate 12 connected to the outer shell 5 is provided with a groove 14, and the other end of the outer shell 5 is connected to the groove 14 of the storage plate 12 by fasteners. The size of the groove 14 matches the size of the outer shell 5.

[0045] In the embodiment, the driving device 9 and the clamping hand 6 are connected by axial fixation and horizontal detachable connection, which provides the axial restraint of the entire clamping device.

[0046] Preferably, the driving device 9 provides the force required for axial movement, and the driving device 9 can adopt a cylinder to realize this function, considering the requirements of the driving device 9 on response speed, cost and maintenance cost.

[0047] Further preferably, the driving device 9 can also adopt an electric device, such as an electric push rod, to convert the rotary motion into linear motion and provide axial pulling force by driving the lead screw or gear rack mechanism by the motor.

[0048] Further preferably, the driving device 9 can also adopt an electromagnetic device to change the axial pulling force of the driving device 9 by changing the on-off electricity.

[0049] As shown in Figure 3 In this embodiment, since the clamping device is connected by fasteners, there will be corresponding gaps at the through hole connection of the support table 4 in the horizontal direction, so during the machining process, the shell 5 will have a certain degree of circumferential movement in the horizontal direction, which may have a certain influence on the machining precision. In order to improve the machining precision of the workpiece 1, a through hole is arranged on the horizontal surface of the shell 5 in the axial direction and connected with the hole positioning pin 7, and the size of the through hole matches the size of the connected hole positioning pin 7. During the working process, after the shell 5 is installed, the hole positioning pin 7 is installed on the corresponding through hole, and the radial position is connected with the nut 8, so that the hole positioning pin 7 is axially fixed. After the machining is completed, the bolt is connected at the axial position of the hole positioning pin 7, the connected nut 8 is disassembled first, then the hole positioning pin 7 is pulled out, and then the shell 5 is disassembled.

[0050] Preferably, the hole positioning pin 7 is provided with a threaded hole in the radial direction, and the shell 5 is also provided with a through hole with a size matching the threaded hole area of the hole positioning pin 7 in the radial direction, and the hole positioning pin 7 is axially fixed by adding the nut 8,

[0051] Preferably, the hole positioning pin 7 is provided with a threaded hole in the axial direction, and the shell 5 is also provided with a through hole with a size matching the threaded hole area of the hole positioning pin 7 in the radial direction, and the hole positioning pin 7 is axially fixed by adding the nut 8,

[0052] As shown in Figure 1 The clamp provided by the utility model discloses a clamp,

[0053] The support column 13 is two or more in number, when the number of support columns 13 is even, the support columns 13 are symmetrically distributed, and when the number of support columns 13 is odd, the support columns 13 are not located on the same straight line.

[0054] The support column 13 is located on the upper end of the support column 13, and is connected with the support column 13 by using fasteners, and the two sides of the horizontal surface of the storage plate 12 also have pull rings 11, the number of the pull rings 11 is two or more, when the number of the pull rings 11 is even, the pull rings 11 are centrally symmetrically distributed.

[0055] The clamping device comprises a clamping hand 6, an outer shell 5 connected outside the clamping hand 6, the outer shell 5 is connected with the storage plate 12 by using threads, and the clamping hand 6 is located at the groove 14 on the upper surface of the storage plate 12; a driving device 9 located on the other side of the storage plate 12 and connected with the through hole on the storage plate 12 by using threads.

[0056] In the embodiment, the support column 13 is of L-shaped structure, the contact area of the support column 13 near the base of the support platform with the support platform is larger, which can effectively improve the stability of the clamp, and when the number of the support column 13 is even, the support column 13 is symmetrically distributed on the two sides of the storage plate 12, which facilitates the fixed connection of the storage plate 12 on the support column 13, and the support column 13 provides strong support.

[0057] In the embodiment, when the number of the pull ring 11 is even, the pull ring 11 is centrally symmetrically distributed, and this distribution mode of the pull ring 11 can more efficiently complete the transportation function during the assembly and disassembly of the clamp.

[0058] In the embodiment, the outer shell 5 and the driving device 9 are provided with through holes corresponding to the edge positions in the horizontal direction, and the through holes are uniformly distributed on the edge positions, and the outer shell 5 and the driving device 9 are tightly connected together by fasteners.

[0059] In the embodiment, the storage plate 12 is of cuboid structure, the edge portions of the upper and lower surfaces of the cuboid structure are treated by rounding, the safety performance is improved, and the groove 14 is formed in the upper surface of the storage plate 12, the number of the groove 14 is even and corresponds to the number of the clamping devices, and the groove 14 is uniformly and symmetrically distributed on the upper surface of the storage plate 12, which facilitates the installation of the clamping device.

[0060] It is further pointed out that the through holes are also arranged in the central positions of the grooves 14 on the storage plate 12, the number of the through holes corresponds to the number of the clamping devices, and the size of the through holes matches the size of the connection position of the driving device 9, which facilitates the connection of the driving device 9 with the clamping hand 6 through the through hole in the central position of the groove 14 of the storage plate 12.

[0061] In the embodiment, the waist-shaped holes are also arranged on the storage plate 12, and the waist-shaped holes are distributed on the two sides of the clamping device, which facilitates the installation of the clamping device on the storage plate 12.

[0062] In the description of the utility model, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0063] In the utility model, unless another definite provision and limitation, the term "connect", "fix" and so on should do the broad sense understanding, for example, "fix" can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electric connection;Can be directly connected, also can be indirectly connected through the intermediate medium, can be two element inside's intercommunication or two element's mutual action relation, unless another definite limitation.For the ordinary skill in the art, the specific meaning of the above-mentioned term in the utility model can be understood according to the specific circumstances.

[0064] In addition, the technical solutions of various embodiments of the present application can be combined with each other, but must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, also not within the protection scope required by the present application.

Claims

1. A clamping device for a clamp, characterized in that It includes: A grab hand suitable for connecting with a driving device, wherein one side of the grab hand is provided with a connecting structure connected with the connecting part of the driving device, and the other side of the grab hand is provided with a grab structure, through the axial movement of which, the workpiece to be processed can be axially fixed; a positioning pin, the size of which matches the size of the pin hole processed on the workpiece to be processed, which provides horizontal constraint force.

2. The clamping device of claim 1, wherein The grab structure is provided with a through hole, the size of which matches the size of the end of the workpiece to be processed towards the driving device.

3. The clamping device of claim 1, wherein The grab structure is trumpet-shaped, with the center size gradually increasing along the axial direction from the end close to the driving device to the upper end away from the driving device, and the part connected with the workpiece has elastic deformation function.

4. The clamping device of claim 1, wherein The connecting structure and the connecting part of the driving device are connected in an axial fixed and horizontally detachable manner.

5. The clamping device of claim 1, wherein The connecting part of the grab structure and the workpiece is also connected with a support table, and the support table is provided with a boss at the connecting part with the workpiece.

6. The clamping device of claim 5, wherein The support table is also connected with a shell axially downward, and the upper end of the shell in the axial direction is connected with the support table by fasteners.

7. The clamping device of claim 6, wherein The horizontal end face of the shell is provided with a through hole, and the through hole is connected with a hole positioning pin, and the hole positioning pin is radially opened, and the radially opened hole positioning pin is connected with a nut.

8. A clamp characterized in that, It includes: Support columns, the number of which is two or more, when the number of support columns is even, the support columns are symmetrically distributed, and when the number of support columns is odd, the support columns are not located on the same straight line; A storage plate connected with the support columns by fasteners; The clamp device of any one of claims 1-7, and the number of clamp devices is two or more, and the clamp devices are uniformly distributed and fixed on the storage plate.

9. The clamp of claim 8, wherein, The storage plate is provided with a through hole at the connecting part with the driving device, and the size of the through hole matches the size of the connecting part of the driving device, and the storage plate is provided with a groove at the connecting part with the shell, and the size of the groove matches the size of the shell.

10. The clamp of claim 8, wherein The end of the storage plate close to the shell is also provided with a pull ring on both sides in the horizontal direction, and the pull ring is fixedly connected with the storage plate.

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