Clamping jaw device for machining
By designing an adaptive gripper device, which utilizes the combined motion of a turntable and a insert rod, automatic adaptive clamping of workpieces of different shapes is achieved, solving the problem of insufficient applicability of existing gripper devices and reducing costs and labor intensity.
Patent Information
- Application Number
- CN202520541711.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-26
- Publication Date
- 2026-02-13
- Estimated Expiration
- 2035-03-26
AI Technical Summary
Existing gripper devices are only suitable for workpieces of one shape, which requires the use of multiple grippers, increases procurement, production and maintenance costs, and the need to replace grippers increases the labor intensity of workers.
A gripper device comprising a circular box, a turntable, a slider, a insert rod, and a control component is designed. By rotating the turntable and moving the insert rod, it can automatically and adaptively grip workpieces of different shapes. The drive component and control component enable the gripper to automatically adjust its gripping position according to the shape of the workpiece.
It enables automatic adaptive clamping of workpieces of different shapes, reduces the types of grippers and the frequency of replacement, lowers procurement and maintenance costs, and reduces the labor intensity of workers.
Smart Images
Figure CN223903445U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the field of machining equipment, especially a clamping jaw device for machining. BACKGROUND
[0002] In the machining production process, the process of changing the shape, size, position and nature of the production object, etc., so that it becomes a finished product or semi-finished product is called a process, and the process is composed of one or a plurality of sequentially arranged working procedures, and a working procedure is composed of a plurality of working steps.
[0003] In the production process, clamping jaws are often used to clamp and fix workpieces. Sometimes the workpieces to be machined are not regular, and the existing clamping jaws are often only suitable for workpieces of one shape, so different clamping jaws need to be provided to adapt to the shape of the workpiece, increasing the procurement, production and maintenance costs. In machining, workers need to replace the corresponding clamping jaws, increasing the labor intensity of workers. UTILITY MODEL CONTENTS
[0004] The utility model aims to provide a clamping jaw device for machining, which can clamp and fix workpieces of different shapes.
[0005] The clamping jaw device for machining includes a circular box body with a sealing cover at the bottom, a plurality of sliding grooves are evenly arranged on the top of the circular box body in the circumferential direction and are in communication with the outside, each sliding groove independently clamps a sliding block, each sliding block is fixed with a clamping block, a rotating disc is horizontally installed in the circular box body, a driving assembly for driving the rotating disc to rotate is arranged on the circular box body, and a plurality of spiral guide grooves are evenly arranged on the top of the rotating disc in the circumferential direction.
[0006] Further, the driving assembly includes a gear, a plurality of clamping teeth are evenly fixed on the bottom of the rotating disc in the circumferential direction, the gear is engaged with the clamping teeth, a rotating shaft in a "T" type structure is independently installed through the side wall of the circular box body, the tip of the rotating shaft is located in the circular box body, the gear is sleeved on the tip of the rotating shaft, and a clamping groove is arranged on the end face of the head end of the rotating shaft.
[0007] Further, the control assembly includes a spring, the spring is located between the plug rod and the hole bottom of the mounting hole, an "L" type structure through groove is arranged on the side wall of the sliding block in communication with the outside, a stop rod that can move along the through groove is fixed on the plug rod, the cross section of the guide groove is in a circular arc type structure, and the bottom end of the plug rod is in a circular arc type structure matched with the guide groove.
[0008] Further, a fixed block is fixed on the end of the file rod, a screw is threaded on the fixed block, and a positioning slot for clamping the tip of the screw is formed on the side wall of the sliding block.
[0009] Further, an inner tube is vertically fixed at the center of the top of the circular box body, the rotating disc is sleeved on the inner tube, a bearing is arranged between the inner tube and the rotating disc, and a through hole in communication with the inner tube is formed on the top of the circular box body and the sealing cover.
[0010] Further, a side plate is horizontally fixed on each sliding block, and screws for abutting against the top of the circular box body are threaded on all the side plates.
[0011] Further, anti-skid lines are formed on the clamping surfaces of all the clamping blocks.
[0012] Compared with the prior art, the utility model has the following beneficial effects:
[0013] According to the shape of the workpiece, a corresponding number of clamping blocks with appropriate positions are selected, the bottom end of the corresponding inserting rod of the clamping block is clamped in the guide groove in alignment through the control assembly, the rotating disc is driven to rotate through the driving assembly, when the rotating disc rotates, the bottom end of the inserting rod moves along the guide groove, the sliding block moves towards the workpiece, the selected clamping block clamps and positions the relatively regular area on the surface of the workpiece, and the clamping blocks at other positions need to be separated from the guide groove through the control assembly thereon before moving. BRIEF DESCRIPTION OF DRAWINGS
[0014] Figure 1 It is a structural schematic view of the utility model;
[0015] Figure 2 It is Figure 1 It is a sectional view of area A-A;
[0016] Figure 3 It is a perspective view of the utility model;
[0017] Figure 4 It is an exploded view of the utility model;
[0018] Figure 5 It is Figure 4 It is an enlarged view of area a;
[0019] The names of the components in the figure are: 1, clamp block; 2, circular box body; 3, inner tube; 4, spring; 5, insertion rod; 6, sliding block; 7, rotating disc; 8, sealing cover; 9, gear; 10, rotating shaft; 11, side plate; 12, stop lever; 13, through slot. DETAILED DESCRIPTION
[0020] The utility model will be further described below by specific embodiments in combination with the drawings, but it is not used to limit the utility model, any modification, equivalent replacement, improvement and the like made within the spirit and principle of the utility model should be included in the protection scope of the utility model.
[0021] EMBODIMENT
[0022] The clamp jaw device for machining described in the embodiment, as shown in Figure 1 , Figure 2 , Figure 3 , includes the circular box body 2 with the bottom with the sealing cover, the sealing cover 8 is horizontally located at the inner bottom end of the circular box body 2, the inner tube 3 is vertically fixed at the center of the inner top of the circular box body 2, the sealing cover 8 is fixed with the bottom of the inner tube 3 through the screw, and the bottom of the sealing cover 8 is provided with a plurality of threaded holes in the circumferential direction, and the clamp jaw device can be installed on the machine tool or other machining platform through the bolt for use;
[0023] The through hole communicated with the inner tube 3 is formed in the top of the circular box body 2 and the sealing cover, when clamping and fixing the longer workpiece, the part of the workpiece can be worn in the inner tube 3, so that clamping is facilitated;
[0024] The top of the circular box body 2 is uniformly provided with a plurality of sliding grooves communicated with the inside and outside in the circumferential direction, and each sliding groove is independently clamped with the sliding block 6, as shown in Figure 4 and Figure 1 , the sliding block 6 and the sliding groove are T-shaped structure, when clamping the workpiece, all the sliding blocks 6 will move along the sliding groove to the center direction of the circular box body 2;
[0025] Each sliding block 6 is fixed with the clamp block 1, as shown in Figure 1 and Figure 4 , the clamp block 1 is triangular structure, one of the right angles of all the clamp blocks 1 faces the center point direction of the circular box body 2, and the face is the clamping face of the clamp block 1; the clamping face of all the clamp blocks 1 is provided with the anti-skid line, the friction between the clamp block 1 and the workpiece is increased through the anti-skid line, so that the workpiece is prevented from moving and slipping; all the sliding blocks 6 move to drive the clamp blocks 1 on them to move, and the workpiece is clamped and fixed through the clamp block 1;
[0026] The rotating disc 7 is horizontally installed in the circular box body 2, the rotating disc 7 is sleeved on the inner tube 3, and the bearing is arranged between the inner tube 3 and the rotating disc 7, so that the rotating disc 7 can rotate;
[0027] Further description, as shown inFigure 2 and Figure 4 As shown, in this embodiment, a preferred embodiment includes a gear 9. The bottom of the turntable 7 has teeth evenly fixed along the circumferential direction, and the gear 9 meshes with the teeth. A rotating shaft 10 with a "T"-shaped structure is independently mounted on the side wall of the circular box 2. Figure 2 As shown, the tip of the rotating shaft 10 is located inside the circular box 2, and the gear 9 is fitted onto the tip of the rotating shaft 10. A slot is provided on the end face of the head end of the rotating shaft 10. In this embodiment, the slot is a hexagonal slot. In use, one end of a hexagonal wrench is engaged in the slot, and the wrench is pushed to make the wrench drive the rotating shaft 10 to rotate. The rotating shaft 10 drives the gear 9 to rotate, and the gear 9 drives the turntable 7 to rotate through meshing with the locking teeth, thereby driving the turntable 7 to rotate inside the circular box 2. Of course, the slot can also be a cross slot or a four-way slot. Angle grooves, etc.; the whole solution constitutes a drive assembly for driving the turntable 7 to rotate; of course, the drive assembly can also use two meshing bevel gears. A rotating shaft 10 with a "T" structure is independently installed on the side wall of the circular box 2. The tip of the rotating shaft 10 is located inside the circular box 2. A slot is opened on the end face of the head end of the rotating shaft 10. One bevel gear is fixed at the center of the bottom of the turntable 7, and the other bevel gear is fitted on the tip of the rotating shaft 10, so as to drive the turntable 7 to rotate inside the circular box 2.
[0028] The top of the turntable 7 has several spiral guide grooves evenly distributed along the circumference. Each slider 6 has a mounting hole at its bottom, and a rod 5 is independently inserted into each mounting hole. Figure 4 As shown, the guide groove has a spiral structure. In this embodiment, the number of guide grooves is the same as the number of insertion rods 5. When all the insertion rods 5 move downward, their bottom ends engage in the guide grooves that are aligned with them. When the turntable 7 rotates, the bottom ends of all the insertion rods 5 will move along the corresponding guide grooves, so that all the sliders 6 move synchronously in the positive and negative directions along the slide grooves towards the center point, thereby driving all the clamping blocks 1 to move synchronously.
[0029] To elaborate further, such as Figure 1 and Figure 5 As shown, this embodiment preferably includes a spring 4, which is located between the insertion rod 5 and the bottom of the mounting hole. When the insertion rod 5 is pushed and moves into the mounting hole, the spring 4 will compress. When the pushing force disappears, the spring 4 will push the insertion rod 5 downward through its own restoring ability, pushing its bottom end out of the mounting hole. The side wall of the slider 6 is provided with a through groove 13 that is internally and externally connected and has an "L" shaped structure, such as... Figure 1As shown, the horizontal end of the through slot 13 of the L-shaped structure is located below, and the through slot 13 is communicated with the mounting hole; the insertion rod 5 is fixed with a stop rod 12 which can move along the through slot 13, when the insertion rod 5 needs to move up and down, the stop rod 12 is swung into the vertical section of the through slot 13, and the stop rod 12 moves up and down in the through slot 13 along with the up and down movement of the insertion rod 5; when the insertion rod 5 needs to be fixed, the stop rod 12 is swung into the horizontal section of the through slot 13 to block the up and down movement of the stop rod 12, thereby fixing the insertion rod 5 and preventing the insertion rod 5 from moving up and down; the cross section of the guide groove is in a circular arc structure, and the bottom end of the insertion rod 5 is in a circular arc structure matched with the guide groove; as shown, Figure 1 and Figure 4 When the clamp block 1 contacts the workpiece and the insertion rod 5 cannot move along the guide groove, the groove wall of the guide groove will lift the insertion rod 5 up to make the insertion rod 5 move up and out of the guide groove, and the rotating disc 7 can continue to rotate; in use, when clamping and fixing a workpiece, the appropriate number and position of the sliding blocks 6 can be selected according to the shape of the workpiece, the stop rod 12 on the corresponding sliding block 6 is swung to make the stop rod 12 located in the horizontal section of the corresponding through slot 13, and the stop rod 12 is positioned, thereby preventing the insertion rod 5 from moving up and down, the bottom end of the insertion rod 5 is clamped in the corresponding guide groove, the rotating disc 7 rotates, the bottom end of the insertion rod 5 moves along the guide groove, the sliding block 6 moves along the sliding groove to the center point, the clamp block 1 at the selected position is attached to the regular area of the workpiece surface, the clamp block 1 clamps and positions the workpiece, and the workpiece is clamped at the center of the circular box body 2; the stop rod 12 on the corresponding sliding block needs to be swung to the vertical section of the corresponding through slot 13 before the clamp block 1 at other positions moves, so that the stop rod 12 can move up and down in the vertical section of the through slot 13, and the insertion rod 5 can move up and down in the mounting hole; when the clamp block 1 at some positions is attached to the protruding surface of the workpiece and cannot continue to move, the corresponding insertion rod 5 cannot move along the guide groove, the groove wall of the guide groove lifts the insertion rod 5 up to make the insertion rod 5 move up and out of the guide groove, and the rotating disc 7 can continue to rotate, and the clamp block 1 at other positions can continue to move to the workpiece, until the clamp block 1 is attached to the recessed area of the workpiece surface; when all the clamp blocks 1 are attached to the workpiece surface, the bottom end of all the insertion rods 5 is clamped in the corresponding guide groove, the stop rod 12 on all the insertion rods 5 is swung to the horizontal section of the corresponding through slot 13, all the insertion rods 5 are fixed, and the insertion rods 5 are prevented from moving up and down, and then the rotating disc 7 is rotated to make all the clamp blocks 1 move to the workpiece, thereby clamping and fixing the workpiece; the whole scheme constitutes a control assembly for controlling the clamping and unclamping of the bottom end of the insertion rod 5 in the corresponding guide groove.
[0030] Each sliding block 6 is horizontally fixed with a side plate 11, and all the side plates 11 are provided with screws for being abutted on the top of the circular box body 2; when the clamp block 1 at some positions clamps and positions the workpiece, the stop rod 12 on the corresponding sliding block 6 is swung to the vertical section of the corresponding through slot 13, so that the stop rod 12 can move up and down in the vertical section of the through slot 13, and the insertion rod 5 can move up and down in the mounting hole; when the clamp block 1 at some positions is attached to the protruding surface of the workpiece and cannot continue to move, the corresponding insertion rod 5 cannot move along the guide groove, the groove wall of the guide groove lifts the insertion rod 5 up to make the insertion rod 5 move up and out of the guide groove, and the rotating disc 7 can continue to rotate, and the clamp block 1 at other positions can continue to move to the workpiece, until the clamp block 1 is attached to the recessed area of the workpiece surface; when all the clamp blocks 1 are attached to the workpiece surface, the bottom end of all the insertion rods 5 is clamped in the corresponding guide groove, the stop rod 12 on all the insertion rods 5 is swung to the horizontal section of the corresponding through slot 13, all the insertion rods 5 are fixed, and the insertion rods 5 are prevented from moving up and down, and then the rotating disc 7 is rotated to make all the clamp blocks 1 move to the workpiece, thereby clamping and fixing the workpiece; the whole scheme constitutes a control assembly for controlling the clamping and unclamping of the bottom end of the insertion rod 5 in the corresponding guide groove. Figure 2As shown, the screw on the corresponding side plate 11 is rotated to make the end of the screw abut against the top of the circular box body 2, thereby locking the part of the clamp block 1;
[0031] The end of the stop lever 12 is fixed with a fixed block, a screw is threaded on the fixed block, and a positioning groove for clamping the tip of the screw is formed in the side wall of the sliding block 6; when the stop lever 12 is swung into the horizontal section of the corresponding through groove 13, the screw on the fixed block will be aligned with the positioning groove, and the tip of the screw is clamped in the positioning groove by rotating the screw, thereby positioning the stop lever 12 to prevent the stop lever 12 from swinging by itself.
[0032] In actual use, the workpiece is placed at the center of all the clamp blocks 1, and according to the relatively regular area on the workpiece, a corresponding number of clamp blocks 1 with appropriate positions are selected, the stop lever 12 on the corresponding sliding block 6 is swung to be located in the horizontal section of the corresponding through groove 13, then one end of the wrench is clamped in the clamping groove, the wrench is pushed to make the wrench drive the rotating shaft 10 to rotate, the rotating shaft 10 drives the rotating disc 7 to rotate through the meshing of the gear 9 and the clamping teeth, when the rotating disc 7 rotates, the bottom end of the inserting rod 5 moves along the guide groove, so that the sliding block 6 moves towards the workpiece, the selected clamp block 1 is attached to the relatively regular area on the surface of the workpiece, and the part of the clamp block 1 clamps and positions the workpiece; the clamp blocks 1 at other positions need to have the stop lever 12 on the corresponding sliding block swung to the vertical section of the through groove 13 before moving, when the part of the clamp blocks 1 is attached to the relatively protruding surface of the workpiece, the clamp block 1 is blocked and cannot continue to move, so that the groove wall of the guide groove pushes the bottom end of the inserting rod 5 out, and the rotating disc 7 continues to rotate, and the other part of the clamp blocks 1 continues to move towards the workpiece, until it is attached to the relatively recessed area on the surface of the workpiece; when all the clamp blocks 1 are attached to the surface of the workpiece, the bottom end of all the inserting rods 5 is clamped in the guide groove aligned therewith, all the stop levers 12 on the inserting rods 5 are swung to the horizontal section of the corresponding through groove 13, all the inserting rods 5 are fixed to prevent the inserting rods 5 from moving up and down, then the rotating disc 7 is rotated to drive all the clamp blocks 1 to move towards the workpiece at the same time, thereby clamping and fixing the workpiece, so that the clamp jaw device can adapt to workpieces of different shapes and clamp and fix workpieces of different shapes.
Claims
1. A device for clamping jaws for machining, comprising a bottomed circular box (2) with a sealing cover, characterised in that: The top of the circular box body (2) is uniformly provided with a plurality of inner-outer communication sliding grooves in the circumferential direction, each of which independently clamps a sliding block (6), each sliding block (6) is fixed with a clamping block (1), a rotating disc (7) is horizontally installed in the circular box body (2), the circular box body (2) is provided with a driving assembly for driving the rotating disc (7) to rotate, and the top of the rotating disc (7) is uniformly provided with a plurality of spiral guide grooves in the circumferential direction; the bottom of each sliding block (6) is provided with a mounting hole, and a plug rod (5) is independently inserted into the mounting hole, and a control assembly is arranged between the plug rod (5) and the sliding block (6) for controlling the bottom end of the plug rod (5) to clamp and release the corresponding guide groove.
2. The jaw assembly of claim 1, wherein: The driving assembly comprises a gear (9), the bottom of the rotating disc (7) is uniformly fixed with a clamping tooth in the circumferential direction, the gear (9) is engaged with the clamping tooth, a rotating shaft (10) in a "T" type structure is independently inserted into the side wall of the circular box body (2), the tip of the rotating shaft (10) is located in the circular box body (2), the gear (9) is sleeved on the tip of the rotating shaft (10), and a clamping groove is formed in the end face of the head end of the rotating shaft (10).
3. The mechanical machining jaw device according to claim 1, characterized in that: The control assembly comprises a spring (4), the spring (4) is located between the plug rod (5) and the hole bottom of the mounting hole, an inner-outer communication "L" type structure through groove (13) is formed in the side wall of the sliding block (6), a stop rod (12) which can move along the through groove (13) is fixed on the plug rod (5), the cross section of the guide groove is in a circular arc type structure, and the bottom end of the plug rod (5) is in a circular arc type structure matched with the guide groove.
4. The jaw assembly of claim 3 wherein: The end of the stop rod (12) is fixed with a fixed block, a screw is inserted into the fixed block, and a positioning groove for clamping the tip of the screw is formed in the side wall of the sliding block (6).
5. The mechanical machining jaw device according to claim 1, characterized in that: The inner tube (3) is vertically fixed at the center of the top of the circular box body (2), the rotating disc (7) is sleeved on the inner tube (3), a bearing is arranged between the inner tube (3) and the rotating disc (7), and a through hole communicated with the inner tube (3) is formed in the top of the circular box body (2) and the sealing cover.
6. The mechanical machining jaw device according to claim 1, characterized in that: A side plate (11) is horizontally fixed on each sliding block (6), and screws for abutting against the top of the circular box body (2) are inserted into all side plates (11).
7. The mechanical machining jaw device according to claim 1, characterized in that: Anti-skid lines are formed on the clamping surfaces of all clamping blocks (1).