Multi-station tool clamp convenient to replace

Abstract

The utility model relates to a multi-station work fixture convenient to replace, which comprises a base and a multi-station fixture body detachably mounted in the middle of the top surface of the base, and cylinders are arranged on two opposite sides of the multi-station fixture body on the top surface of the base. A lever mechanism used for clamping the multi-station clamp body is arranged between each air cylinder and the multi-station clamp body. Each lever mechanism comprises a cross rod and a supporting piece, wherein one end of each cross rod is pivoted to a piston rod of the corresponding air cylinder, the other end of each cross rod is used for being movably clamped with the multi-station clamp body, and the axis of each supporting piece is pivoted to the corresponding cross rod and parallel to the axis of the piston rod of the corresponding air cylinder. And a lifting handle is arranged on the multi-station clamp body. According to the utility model, the replacement of the multi-station tool clamp on a machine tool is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of tooling fixtures, and in particular to a multi-station tooling fixture that is easy to replace. Background Technology

[0002] Multi-station tooling fixtures have been widely used in machining processes to improve production efficiency. However, in existing technologies, multiple stations are set up on the machine tool, and corresponding fixtures are then installed at these stations using bolts to form the multi-station fixture body. This structure requires manual disassembly and assembly at each station, which is cumbersome, time-consuming, and results in low production efficiency. Utility Model Content

[0003] To address the shortcomings of existing fixtures, this invention provides a multi-station tooling fixture that is easy to replace.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a multi-station tooling fixture that is easy to replace, including a base and a multi-station fixture body that can be detachably installed in the middle of the top surface of the base. On the top surface of the base, a cylinder with a piston rod that moves vertically is provided on both sides of the multi-station fixture body. A lever mechanism for clamping the multi-station fixture body is provided between each cylinder and the multi-station fixture body. The lever mechanism includes a crossbar with one end pivotally connected to the piston rod of the cylinder and the other end for movably engaging with the multi-station fixture body, and a support member with the axis of the crossbar that is parallel to the axis of the piston rod of the cylinder. The multi-station fixture body is provided with a handle.

[0005] Preferably, the multi-station fixture body has a top surface notch on the top edge corresponding to the cylinder side, which engages with the crossbar.

[0006] Preferably, the base is provided with a mounting bracket, the mounting bracket is provided with a locking block, and the bottom surface of the multi-station fixture body is provided with a locking groove that matches and engages with the locking block.

[0007] Preferably, the locking block is a guide post mounted on the mounting bracket, and the locking slot is provided with a guide sleeve that matches and engages with the guide post.

[0008] Preferably, a support seat is provided on the top surface of the cylinder, and the end of the support member away from the crossbar is pivotally connected to the support seat.

[0009] Preferably, the support member is provided in two parts and is pivotally connected to the support base at opposite ends of the vertical portion of the support base.

[0010] Preferably, there are two handles, which are located on opposite sides of the multi-station fixture body.

[0011] Preferably, the multi-station fixture body includes a mounting base that can be detachably mounted on a base, two clamping blocks that can be detachably mounted on opposite sides of the top surface of the mounting base, and a plurality of OK clamps that are detachably arranged side by side on the top surface of the mounting base between the two clamping blocks and form clamping positions with the two clamping blocks. The handle is provided on the side wall of the mounting base corresponding to the clamping block.

[0012] Preferably, each of the OK clips includes a first push block with an inverted trapezoidal cross section and inclined blocks slidably disposed on opposite sides of the first push block; the top surface of the mounting base is provided with a top surface groove that matches the horizontal sliding of the two inclined blocks.

[0013] Preferably, each of the two inclined blocks in the OK clamp can be detachably connected to a second push block on the side that is far apart from each other, and the surface of the second push block and the clamping block opposite it forms a clamping station.

[0014] The beneficial effects of this utility model are as follows: The multi-station fixture body is detachably mounted on the base. The cylinder drive enables the crossbar in the lever mechanism to easily lock or unlock the multi-station fixture body on the base. In use, the base is fixed on the machine tool, and the fixtures on multiple stations are assembled and disassembled on the machine tool by assembling and disassembling the multi-station fixture body on the base. It is no longer necessary to assemble and disassemble one station at a time, which facilitates the replacement of multi-station fixtures on the machine tool. The operation is simple, the fixture replacement time is short, and the production efficiency is improved. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the tooling fixture according to an embodiment of the present utility model;

[0016] Figure 2 This is a schematic diagram of the connection between the cylinder and the lever on the tooling fixture base according to an embodiment of this utility model;

[0017] Figure 3 This is an embodiment of the present utility model. Figure 2 A magnified structural diagram of A in the middle;

[0018] Figure 4 This is a schematic diagram of the structure of the multi-station fixture body according to an embodiment of the present invention;

[0019] Figure 5 This is a schematic diagram of the bottom surface of the multi-station fixture body according to an embodiment of the present invention;

[0020] Figure 6 This is a structural schematic diagram of the front of the mounting base according to an embodiment of the present invention.

[0021] Figure 7 This is a schematic diagram of the structure of the OK clip according to an embodiment of this utility model;

[0022] Component names and serial numbers in the diagram: 1-Base; 2-Multi-station fixture body; 20-Top surface notch; 21-Slot; 22-Mounting seat; 23-Clamping block; 24-OK clamp; 220-Protrusion; 221-Top surface slide groove; 240-First push block; 241-Inclined block; 242-Second push block; 3-Cylinder; 30-Piston rod; 31-Support seat; 4-Lever mechanism; 40-Horizontal bar; 41-Support component; 5-Handle; 6-Mounting bracket; 7-Clamping block; 70-Guide sleeve. Detailed Implementation

[0023] To more clearly illustrate the purpose, technical solution, and advantages of the embodiments of this utility model, the present utility model will be further described below in conjunction with the accompanying drawings and embodiments. A clear and complete description will be provided. Obviously, the described embodiments are some, but not all, embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the protection scope of this utility model.

[0024] Examples of embodiments of this utility model Figures 1 to 7As shown, a replaceable multi-station tooling fixture includes a base 1 and a multi-station fixture body 2 detachably mounted on the center of the top surface of the base 1. For example, if the base 1 is designed as a rectangular structure, multiple stations on the multi-station fixture body 2 are arranged along the long side of the base 1. In use, the base 1 is bolted to the corresponding positions on the machine tool. On the top surface of the base 1, on opposite sides of the multi-station fixture body 2, are two cylinders 3 with piston rods 30 that move vertically. The two cylinders 3 are installed on opposite sides of the long side of the top surface of the base 1, that is, on the left and right sides of the top surface of the base 1. The multi-station fixture body 2 is located between the two cylinders 3, and the piston rods 30 of the cylinders 3 move vertically. Each cylinder 3 and the multi-station fixture... Each of the two bodies 2 is provided with a lever mechanism 4 for clamping the multi-station fixture body 2. The lever mechanism 4 includes a crossbar 40, one end of which is pivotally connected to the piston rod 30 of the cylinder 3 and the other end of which is used to movably engage with the multi-station fixture body 2; and a support member 41, whose axis is pivotally connected to the crossbar 40 and whose axis is parallel to the axis of the piston rod 30 of the cylinder 3. The support member 41 is a support plate or a support rod. Its upper end is pivotally connected to the crossbar 40 and is spaced a certain distance from both ends of the crossbar 40. Its lower end is pivotally connected to the base 1 or to the top surface of the cylinder 3 housing, depending on the situation. The support member 41 forms the support point of the lever mechanism 4. It is preferred that the support member 41 is pivotally connected to the top surface of the cylinder 3 housing. At this time, for the cylinder 3 and the lever located on the left side of the top surface of the base 1. For mechanism 4, the left end of the crossbar 40 is pivotally connected to the piston rod 30 of the cylinder 3, and the right end of the crossbar 40 extends towards the multi-station fixture body 2. The distance from the pivot point of the support member 41 on the crossbar 40 to the left end of the crossbar 40 is greater than the distance to the right end of the crossbar 40. In this way, the cylinder 3 can apply a smaller force to the crossbar 40, while the force applied by the crossbar 40 to the multi-station fixture body 2 is larger, forming a larger clamping force on the multi-station fixture body 2, which facilitates the stable installation of the multi-station fixture body 2 on the machine tool. The cylinder 3 and lever mechanism 4 located on the right side of the top surface of the base 1 are mirror images of the cylinder 3 and lever mechanism 4 located on the left side of the top surface of the base 1. The pivot connection structure between the crossbar 40 and the piston rod 30 of the cylinder 3 is such that the crossbar 40... A U-shaped notch is provided at the end of the cylinder 3. The top of the piston rod 30 of the cylinder 3 extends and is inserted into the extension post in the U-shaped notch of the crossbar 40. Then, through holes are provided that pass through the extension post and the two side walls of the U-shaped notch of the crossbar 40. Finally, a bolt is used to pass through the through hole, and a nut is connected to the bolt to pivotally connect the crossbar 40 to the piston rod 30 of the cylinder 3. A handle 5 is provided on the multi-station fixture body 2. The handle 5 has a U-shaped structure and is set on the front and / or rear side of the multi-station fixture body 2. In order to facilitate the picking up and putting down of the multi-station fixture body 2, two handles 5 are provided and set on opposite sides of the multi-station fixture body 2. When the two cylinders 3 are set on the left and right sides of the top surface of the base 1, the two handles 5 are set on the front and rear sides of the multi-station fixture body 2 respectively.In practical applications, the base 1 is fixed to the machine tool. When installing or removing the multi-station fixture on the machine tool, it is not necessary to disassemble the base 1. Only the multi-station fixture body 2 needs to be replaced to achieve the clamping and unclamping of the workpiece outside the machine tool, thereby improving the machine tool's uptime. In use, the workpiece to be clamped is first clamped on the multi-station fixture body 2, and then the multi-station fixture body 2 is installed on the base 1. Finally, driven by the cylinder 3, the piston rod 30 of the cylinder 3 moves upward and pushes the crossbar 40 and the end pivotally connected to it to move upward. The end of the crossbar 40 away from the piston rod 30 of the cylinder 3 moves downward and engages with the multi-station fixture body 2, thereby realizing the installation of the multi-station fixture on the machine tool. When disassembly is required, the reverse steps are used.

[0025] Further improvements, such as Figure 1 , Figure 4 and Figure 6 As shown, for the engagement structure between the crossbar 40 and the multi-station fixture body 2, the multi-station fixture body 2 has a top surface notch 20 on the top surface edge corresponding to the side of the cylinder 3, which engages with the crossbar 40. That is, the top surface notch 20 is provided on both the left and right edges of the top surface of the multi-station fixture body 2. Then, the end of the crossbar 40 away from the piston rod 30 of the cylinder 3 can be engaged in the top surface notch 20 and pressed against the inner bottom surface of the top surface notch 20, which facilitates the engagement of the crossbar 40 and the multi-station fixture body 2.

[0026] Further improvements, such as Figures 1 to 5 As shown, for the detachable structure between the base 1 and the multi-station fixture body 2, the base 1 is provided with a mounting bracket 6, and the mounting bracket 6 is provided with a locking block 7. The bottom surface of the multi-station fixture body 2 is provided with a locking groove 21 that matches and engages with the locking block 7. If the mounting bracket 6 uses two square mounting blocks, the two mounting blocks are arranged parallel to each other and are bolted to the base 1 in a manner perpendicular to the top surface of the base 1. The two mounting blocks are located between two cylinders 3. One mounting block is installed on the top surface of the base 1 near the left cylinder 3, and the other mounting block is installed on the top surface of the base 1 near the right cylinder 3. Both mounting blocks have locking blocks 7 on their top surfaces. The locking blocks 7 are cylindrical, with mounting holes on their top surfaces. The lower part of the locking block 7 engages with the mounting hole. The slot 21 is circular. The multi-station fixture body 2 is mounted on the base 1 by engaging the locking blocks 7 in the circular slot 21. Preferably, the locking blocks 7 are guide posts mounted on the mounting frame. A guide sleeve 70, matching and engaging with the guide post, is interference-fitted into the slot 21. This forms a guide post and guide sleeve type pin positioning structure, allowing for quick and accurate replacement of the multi-station fixture body 2. The mounting structure of the guide sleeve 70 and the slot 21 is as follows: Figure 5As shown, on the bottom surface of the multi-station fixture body 2, that is, on the bottom surface of the mounting base 22 of the multi-station fixture body 2, the left slot 21 is equipped with the guide sleeve 70, while the right slot 21 is not equipped with the guide sleeve 70. Meanwhile, to make the mounting structure of the multi-station fixture body 2 on the base 1 more stable, an additional mounting block is set between the two mounting blocks. The middle mounting block is supported in the middle of the bottom surface of the multi-station fixture body 2, that is, the middle of the bottom surface of the mounting base 22. Therefore, there is no need to set a locking block 7 and a slot 21 between the top surface of the middle mounting block and the bottom surface of the mounting base 22.

[0027] Further improvements, such as Figures 1 to 3 As shown, a support base 31 is provided on the top surface of the cylinder 3. The end of the support member 41 away from the crossbar 40 is pivotally connected to the support base 31. That is, the support member 41 is bolted to the top surface of the cylinder 3 housing near the side of the multi-station fixture body 2. The upper end of the support member 41 is pivotally connected to the crossbar 40, and the lower end is pivotally connected to the support base 31. The support base 31 is an inverted T-shaped support base. Two support members 41 are provided and are pivotally connected to the support base 31 at opposite ends of the vertical part of the support base 31. The horizontal part of the support base 31 is arranged in the front-back direction and is bolted to the top surface of the cylinder 3 housing. The vertical part of the support base 31 is provided with a front-back support through hole. The two support members 41 are pivotally connected to the support base 31 at opposite ends of the support through hole through a rotating shaft installed in the support through hole. This support base 31 has sufficient support strength and facilitates the installation of the support members 41.

[0028] Further improvements, such as Figures 4 to 7As shown, for the multi-station fixture body 2, the multi-station fixture body 2 includes a mounting base 22 detachably mounted on the base 1, two clamping blocks 23 detachably mounted on opposite sides of the top surface of the mounting base 22, and multiple OK clamps 24 detachably arranged side-by-side on the top surface of the mounting base 22 between the two clamping blocks 23, each forming a clamping station with the two clamping blocks 23. The mounting base 22 has a rectangular structure with its long side along the left-right direction. The multiple OK clamps 24 are arranged in the middle of the top surface of the mounting base 22 along the left-right direction. The clamping blocks 23 have a long strip structure and are arranged on the front and rear sides of the top surface of the mounting base 22. The surfaces of the clamping blocks 23 opposite to the OK clamps 24 form clamping end faces. The clamping end faces can be set into corresponding structures according to the shape of the workpiece to be clamped. For example, if the surface of the workpiece to be clamped opposite to the clamping end face has a curved structure, the clamping end face is set to be aligned with the shape of the workpiece to be clamped. The curved surface structure matches the curved surface; the clamping block 23 is detachably mounted on the mounting base 22 by bolts, that is, the mounting base 22 is provided with a mounting base through hole that penetrates the upper and lower surfaces of the mounting base 22, and the bottom surface of the clamping block 23 is provided with a threaded hole. Then, the bolt is passed through the mounting base through hole and threaded into the threaded hole. The detachable clamping block 23 on the mounting base 22 can replace different clamping blocks 23 according to the shape of the workpiece to be clamped, which is more convenient to use and reduces costs; the handle 5 is provided on the side wall of the mounting base 22 corresponding to the clamping block 23, and is provided on the front end face and / or rear end face of the mounting base 22; preferably, two handles 5 are provided on the front end face and rear end face of the mounting base 22 respectively; the top surface notch 20 is provided on the left edge and right edge of the top surface of the mounting base 22; the slot 21 that engages with the locking block 7 is provided on the bottom surface of the mounting base 22. The mounting base 22 has a protrusion 220 on its top surface located between the two clamping blocks 23. The OK clip 24 is located on the top surface of the protrusion 220, which facilitates the installation and opening / closing of the OK clip 24.For each OK clip 24, each OK clip 24 includes a first push block 240 with an inverted trapezoidal cross-section and two inclined blocks 241 slidably disposed on opposite sides of the first push block 240. The front and rear sides of the first push block 240 are both inclined surfaces. The two inclined blocks 241 are a front inclined block with its rear side inclined and a rear inclined block with its front side inclined, which slides on the front side of the first push block 240. The first push block 240 forms a wedge-shaped sliding relationship with both the front and rear inclined blocks. The top surface of the first push block 240 is provided with a push block threaded through hole, and the top surface of the mounting base 22 is provided with a top surface threaded hole corresponding to the position of the push block threaded hole. Bolts threaded into the threaded through hole and the top threaded hole of the push block connect the first push block 240 and the mounting base 22. The top surface of the mounting base 22 is provided with a top surface groove 221 that matches the horizontal sliding of the two inclined blocks 241. The inclined blocks 241 slide back and forth within the top surface groove 221. In use, first loosen the connection between the first push block 240 and the mounting base 22, install the workpiece to be clamped between the inclined block 241 and the clamping block 23, and then tighten the bolts so that the first push block 240 applies force to push the inclined block 241 towards the corresponding clamping block 23, thereby clamping the workpiece. The top surface groove 221 ensures the sliding direction of the inclined block 241. As for the sliding structure between the inclined block 241 and the first push block 240, each inclined block 241 has a first groove in an inverted T-shape on the surface opposite to the first push block 240, and a sliding block extends from the first push block 240 to match the first groove. Each of the two inclined blocks 241 in each OK clamp 24 can be detachably connected to a second push block 242 on one side away from each other. The second push block 242 and the surface of the clamping block 23 opposite it form a clamping station. The second push block 242 is detachably installed on the inclined block 241 using bolts and nuts. The workpiece is clamped by the second push block 242 and the clamping block 23. In this way, the shape of the side of the second push block 242 opposite to the workpiece can be set according to the shape of the workpiece, so that the clamping station formed by the second push block 242 and the clamping block 23 can be used to clamp different products. The detachable installation of the second push block 242 on the inclined block 241 facilitates its replacement and is more convenient to use.

[0029] Although the present invention has been described in detail above with general description and specific embodiments, some modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.

Claims

1. A multi-station tooling fixture that is easy to replace, characterized in that: The device includes a base and a multi-station fixture body that can be detachably installed in the middle of the top surface of the base. On the top surface of the base, there is a cylinder with a piston rod that moves vertically on both sides of the multi-station fixture body. A lever mechanism for clamping the multi-station fixture body is provided between each cylinder and the multi-station fixture body. The lever mechanism includes a crossbar with one end pivotally connected to the piston rod of the cylinder and the other end for movably engaging with the multi-station fixture body, and a support member with the axis of the crossbar that is parallel to the axis of the piston rod of the cylinder. The multi-station fixture body is equipped with a handle.

2. The easily replaceable multi-station tooling fixture according to claim 1, characterized in that... The multi-station fixture body has a top surface notch on the top edge corresponding to the cylinder side, which engages with the crossbar.

3. The easily replaceable multi-station tooling fixture according to claim 1, characterized in that... The base is provided with a mounting bracket, the mounting bracket is provided with a locking block, and the bottom surface of the multi-station fixture body is provided with a locking groove that matches and engages with the locking block.

4. The easily replaceable multi-station tooling fixture according to claim 3, characterized in that... The locking block is a guide post set on the mounting bracket, and the locking slot is provided with a guide sleeve that matches and engages with the guide post.

5. The easily replaceable multi-station tooling fixture according to claim 1, characterized in that... A support seat is provided on the top surface of the cylinder, and the end of the support member away from the crossbar is pivotally connected to the support seat.

6. The easily replaceable multi-station tooling fixture according to claim 5, characterized in that... The support base is an inverted T-shaped support base, and the support member is provided in two parts, which are pivotally connected to the support base at opposite ends of the vertical part of the support base.

7. The easily replaceable multi-station tooling fixture according to claim 1, characterized in that... The handle is provided in two parts and is located on opposite sides of the multi-station fixture body.

8. The easily replaceable multi-station tooling fixture according to claim 1, characterized in that... The multi-station fixture body includes a mounting base that can be detachably mounted on a base, two clamping blocks that can be detachably mounted on opposite sides of the top surface of the mounting base, and a plurality of OK clamps that are detachably arranged side by side on the top surface of the mounting base between the two clamping blocks and form clamping positions with the two clamping blocks. The handle is provided on the side wall of the mounting base corresponding to the clamping block.

9. The easily replaceable multi-station tooling fixture according to claim 8, characterized in that... Each of the OK clips includes a first push block with an inverted trapezoidal cross section and two inclined blocks slidably disposed on opposite sides of the first push block; the top surface of the mounting base is provided with a top surface groove that matches the horizontal sliding of the two inclined blocks.

10. The easily replaceable multi-station tooling fixture according to claim 9, characterized in that: Each of the two inclined blocks in the OK clamp can be detachably connected to a second push block on the side that is far apart from each other. The surface of the second push block and the clamping block opposite it forms a clamping station.

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