Switchable clamping mode vise

Abstract

The present invention discloses a clamping mode switchable vise, comprising a pliers body, a screw, a screw fixing block and jaws, wherein the screw passes through the screw fixing block and both ends are respectively engaged with the jaws through reverse threaded connection structures, the two jaws are respectively slidably connected to the pliers body and can be relatively close to or relatively far away from each other when the screw is driven to rotate, and also comprises a switching mechanism, wherein the switching mechanism is installed in the pliers body and can switch between a self-centering mode and an adaptive mode by fixing or loosening the screw fixing block, thereby meeting different clamping requirements, providing a more stable and flexible clamping solution, and avoiding the problem of increased production costs and shortage of storage space in the factory due to the factory simultaneously storing a large number of vises with only a self-centering mode or an adaptive mode.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical processing positioning, in particular to the technical field of vises. Background Art

[0002] A vise is a clamp that uses a screw or other mechanism to move the jaws to clamp the workpiece. It is generally composed of a clamp body, a screw installed in the clamp body to drive the jaws, and one or a pair of jaws that can move relatively close or far away while the screw is driven to rotate. Vises are generally used on processing machines such as planers, milling machines, drilling machines, grinders and slotting machines to clamp and fix workpieces (clamping and loosening the workpiece by opening and closing the jaws). They can also assist the fitter to complete operations such as chiseling, sawing, filing, drilling, tapping, threading, straightening and bending the workpiece.

[0003] The screw rod is generally in the jaw body of the vise, and is often indirectly and firmly connected to the jaw body with the help of a screw rod fixing block. According to the design of whether the screw rod fixing block and the jaw body are fixedly connected, the double-jaw vise can be divided into two categories: self-centering type and adaptive type. Among them, the self-centering type vise, such as the self-centering vise centering accuracy adjustment and fixing device disclosed in the invention with publication number CN113858061A, the self-centering vise disclosed in the invention with publication number CN112548884A, and the high-precision self-centering vise disclosed in the invention with publication number CN116619259A. The vise, thanks to its self-centering design (i.e. the screw fixing block is firmly located at the center of the vise body and remains stationary throughout the operation), has the characteristics of high repeatability, good stability, and simple and quick operation. In contrast, the adaptive vise adopts a different design concept. Its screw fixing block is not fixed to the vise body (i.e. its screw fixing block does not fix the screw). This different design idea realizes the function of automatic floating adjustment of the jaws along the slide rail, which effectively copes with the internal stress formed by bending moment or torque when the workpiece is clamped unstable, and ultimately ensures the quality and precision of the workpiece.

[0004] In view of the different advantages of self-centering vises and adaptive vises, factories often need to purchase both types of vises at the same time, and then adapt them to the actual situation of the workpiece and assemble them on the processing machine tools. Even so, when facing the same batch of workpieces, it is very likely that different types of vises will need to be used in combination, which means that the time spent on replacing vises takes up precious processing time. In addition, under large-scale demand, the factory's procurement costs increase, and the storage space for parts in the factory is also occupied in large quantities, increasing the cost of fixed asset investment. Summary of the invention

[0005] The purpose of the present invention is to solve the problems in the prior art and practical applications, and to propose a vise with switchable clamping modes to meet different clamping needs, provide a more stable and flexible clamping solution, and avoid the problem of increased production costs and shortage of storage space in the factory due to the factory simultaneously stocking a large number of vises with only self-centering mode or adaptive mode.

[0006] To achieve the above-mentioned purpose, the present invention proposes a clamping mode switchable vise, including a pliers body, a screw, a screw fixing block and jaws, the screw passing through the screw fixing block and the two ends are respectively engaged with the jaws by reverse threaded connection structures (this realizes a stable and efficient connection method), the two jaws are respectively slidably connected to the pliers body and can be relatively close to or relatively far away when the screw is driven to rotate, and also includes a switching mechanism, which is installed in the pliers body and can realize switching between self-centering mode and adaptive mode by fixing or loosening the screw fixing block.

[0007] Preferably, the switching mechanism is a grabbing and releasing component, a pushing and releasing component or a rotating and releasing component which can keep the screw fixing block fixed or freely floating in the pliers body by clamping or releasing the screw fixing block, by tightening or loosening the screw fixing block, or by tightening or loosening the screw fixing block. The rotating and releasing component is a spring-type rotating and releasing device which can achieve angular positioning by being plugged into the pliers body, or a self-locking rotating and releasing device which can achieve angular positioning by a mechanism having a self-locking characteristic.

[0008] Furthermore, the catch and release assembly includes a screw, a slider and a limit cover. The screw can rotate freely and is installed in the pliers body. The two sliders are arranged on opposite sides of the screw fixing block through threads on both sides of the screw and are respectively slidably connected in the pliers body. The two sliders can be relatively close to or relatively far away from each other when the screw is driven to rotate. The two limit covers are respectively arranged on opposite sides of the two sliders.

[0009] Furthermore, the spring-insertion type rotary release device includes a conversion block, a handle and a spring locating pin. The conversion block can be rotatably connected to the pliers body and the handle and the spring locating pin are respectively installed on the outer periphery. The interior of the pliers body is provided with a locating pin slot. The handle can drive the conversion block to rotate and make the spring locating pin engage with the locating pin slot when it is facing the locating pin slot. The conversion block can tighten the screw fixing block (i.e., limit the free floating of the screw fixing block) when the spring locating pin is engaged with the locating pin slot.

[0010] Furthermore, the top of the conversion block is provided with two oppositely arranged block upper protrusions, and the adjacent surfaces of the two block upper protrusions are respectively provided with bevel corners formed by the intersection of the first bevel and the second bevel, and the bottom of the screw fixing block is provided with a lower convex strip extending between the two bevel corners, and the two bevel corners can jointly limit the movement of the lower convex strip when the spring locating pin is inserted into the locating pin slot.

[0011] Furthermore, the lifting assembly includes an internally threaded movable pin, a toothed bolt, a gear shaft and a support bolt. The internally threaded movable pin is arranged below the screw fixing block and can only move up and down. The upper end of the toothed bolt is threadedly connected to the internally threaded movable pin and the lower end is respectively meshed with two gear shafts. The two gear shafts are rotatably arranged in the pliers body through support bolts. The internally threaded movable pin can tighten the screw fixing block upward or loosen the screw fixing block downward while the two gear shafts are driven to rotate.

[0012] Furthermore, the outer walls of the two gear shafts are respectively provided with shaft ring grooves, the bottom ends of the two support bolts are respectively fixed to the pliers body through threads and the top ends are respectively inserted into the corresponding shaft ring grooves through pointed parts, the adjacent surfaces of the internal threaded movable pin and the screw fixing block are designed to be matched convex conical surfaces and concave conical surfaces, and a protective cover installed on the pliers body is also designed below the adjacent ends of the two support bolts.

[0013] Furthermore, the self-locking release device includes a turbine and a worm, the turbine is rotatably connected to the pliers body and meshes with the worm, and the worm can use the turbine to tighten the screw fixing block (i.e., limit or release the screw fixing block) when the worm is driven to rotate a specified angle.

[0014] Furthermore, the top of the turbine is provided with two oppositely arranged wheel body upper convex parts, and the adjacent surfaces of the two wheel body upper convex parts are provided with flat parts. The bottom of the screw fixing block is provided with a lower convex column extending between the two flat parts, and the surface of the lower convex column is provided with two oppositely arranged flat cut surfaces. The two flat parts can jointly limit the movement of the lower convex column when rotated to be offset from the two flat cut surfaces (such as offset to 90°), the teeth of the turbine are arranged in a full circle or a non-full circle, and the outer wall of the worm is provided with a rod body ring groove, and a limit bolt fixed to the clamp body is inserted in the rod body ring groove.

[0015] Preferably, an auxiliary mechanism is further included, wherein the auxiliary mechanism has an electric drive device that can provide switching power for the switching mechanism and a pressure sensor that can monitor the clamping force of the two jaws in real time.

[0016] Beneficial effects of the present invention:

[0017] 1) By adding a switching mechanism to the pliers body, the vise can be adjusted to the self-centering mode when the switching mechanism fixes the screw fixing block, or the vise can be adjusted to the adaptive mode when the switching mechanism releases the screw fixing block, thereby meeting different clamping requirements, providing a more stable and flexible clamping solution, and avoiding the problem of increased production costs and shortage of storage space in the factory due to the factory simultaneously stocking a large number of vises with only self-centering mode or adaptive mode;

[0018] 2) By adopting the method of clamping or loosening the screw fixing block, tightening or loosening the screw fixing block, or tightening or loosening the screw fixing block so that the screw fixing block can be kept fixed or floated freely in the clamp body, a switchable vise with different centering strengths and manufacturing costs can be obtained, which can better meet the different needs of the market;

[0019] 3) By integrating an auxiliary system equipped with an electric drive device and a precision pressure sensor, the clamping force of the double jaws of the vise can be monitored instantly and accurately (in complex working scenarios, when multiple vises work together, the system can intelligently identify and respond. Once it detects that the clamping force of any one or more vises exceeds the preset safety pressure threshold, the electric drive device is immediately triggered to automatically and seamlessly switch the affected vise from self-centering mode to adaptive mode), thereby enhancing the clamping intelligence level of the vise and ensuring the safety and flexibility of operation.

[0020] The features and advantages of the present invention will be described in detail through embodiments in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic diagram of the three-dimensional structure of the first embodiment;

[0022] Figure 2 yes Figure 1 A schematic diagram of the three-dimensional structure when the pliers body and one of the jaws are removed;

[0023] Figure 3 yes Figure 2 Schematic diagram of the three-dimensional structure when the screw fixing block and the limit cover are removed;

[0024] Figure 4 is a schematic diagram of the three-dimensional structure of the second embodiment;

[0025] Figure 5 yes Figure 4 A schematic diagram of the three-dimensional structure when the pliers body and one of the jaws are removed;

[0026] Figure 6 is a schematic diagram of the position setting of the spring positioning pin of the second embodiment;

[0027] Figure 7is a schematic diagram of the working cooperation between the lower convex strip and the upper convex parts of the two blocks in the second embodiment;

[0028] Figure 8 is a schematic diagram of the three-dimensional structure of the third embodiment;

[0029] Fig. 9 yes Figure 8 A schematic diagram of the three-dimensional structure when the pliers body and one of the jaws are removed;

[0030] Fig.10 is a cross-sectional view of the top-loading assembly of the third embodiment;

[0031] Fig.11 yes Fig. 9 Schematic diagram of the three-dimensional structure when one of the gear shafts is removed;

[0032] Fig.12 is a schematic diagram of the three-dimensional structure of the fourth embodiment;

[0033] Fig.13 yes Fig.12 A schematic diagram of the three-dimensional structure when the pliers body and one of the jaws are removed;

[0034] Fig.14 is a schematic diagram of the working cooperation between the lower boss and the upper convex parts of the two wheel bodies in the fourth embodiment;

[0035] Fig.15 is a schematic diagram of the three-dimensional structure of Embodiment 5;

[0036] Fig.16 yes Fig.15 Schematic diagram of the three-dimensional structure when the electric drive device is removed.

[0037] In the figure: 1-clamp body, 2-screw rod, 3-screw rod fixing block, 31-lower convex strip, 32-concave cone surface, 33-lower convex column, 331-flat cut surface, 4-jaw, 5-grasp and release assembly, 51-screw rod, 52-slider, 53-limiting cover, 6-spring-insertion type rotating and releasing device, 61-conversion block, 611-upper convex part of the block, 6111-first inclined surface, 6112-second inclined surface, 6113-inclined corner, 62-handle, 63-spring positioning pin, 7-top release assembly, 71- Internal threaded movable pin, 711-convex cone surface, 72-toothed bolt, 73-gear shaft, 731-shaft ring groove, 74-support bolt, 741-pointed head, 75-protective cover, 8-self-locking spinner, 81-turbine, 811-convex part on wheel body, 8111-flat part, 82-worm, 821-rod ring groove, 83-limit bolt, 9-auxiliary mechanism, 91-electric drive equipment, 92-coupling, 93-wireless switch, 94-base, 95-support frame. DETAILED DESCRIPTION

[0038] Embodiment 1:

[0039] See also Figures 1 to 3 The clamping mode switchable vise of the present invention comprises a pliers body 1, a screw 2, a screw fixing block 3 and a jaw 4. The screw 2 passes through the screw fixing block 3 and both ends are respectively engaged with the jaw 4 through reverse threaded connection structures. The two jaws 4 are respectively slidably connected to the pliers body 1 and can be relatively close to or relatively far away from each other when the screw 2 is driven to rotate. The vise also comprises a switching mechanism, which is installed in the pliers body 1 and can switch between the self-centering mode and the adaptive mode by fixing or loosening the screw fixing block 3.

[0040] The switching mechanism is a catch-and-release assembly 5 that can clamp or release the screw fixing block 3 so that the screw fixing block 3 remains fixed or floats freely in the pliers body 1 .

[0041] The grasping and releasing assembly 5 comprises a screw 51, a slider 52 and a limit cover 53. The screw 51 can rotate freely and is installed in the pliers body 1. The two sliders 52 are arranged on the opposite sides of the screw fixing block 3 through the threads on both sides of the screw 51 and are respectively slidably connected in the pliers body 1. The two sliders 52 can be relatively close to or relatively far away from each other when the screw 51 is driven to rotate. The two limit covers 53 are respectively arranged on the opposite sides of the two sliders 52, wherein the adjacent surfaces of the two sliders 52 and the screw fixing block 3 are also provided with matching concave and convex surface structures; the two limit covers 53 are respectively fixed to the pliers body 1.

[0042] In addition, scale lines can be respectively provided on the surfaces of the two jaws 4, so that workers can better control the position of the clamped workpiece by using the scale lines, and the clamping efficiency of the workpiece can be effectively improved in work scenarios where the positioning accuracy requirements are not high.

[0043] Working process of the present invention:

[0044] When the vise is required to be in the self-centering mode, the screw rod 51 can be turned forward to make the two sliders 52 approach each other until the two sliders 52 clamp the screw fixing block 3 together (the screw fixing block 3 cannot move because it is clamped by the two sliders 52).

[0045] If the vise needs to be in the adaptive mode, the above operation is performed in the reverse direction until the screw fixing block 3 is released by the two slide blocks 52 .

[0046] Embodiment 2:

[0047] See also Figures 4 to 7The clamping mode switchable vise of the present invention comprises a pliers body 1, a screw 2, a screw fixing block 3 and a jaw 4. The screw 2 passes through the screw fixing block 3 and both ends are respectively engaged with the jaw 4 through reverse threaded connection structures. The two jaws 4 are respectively slidably connected to the pliers body 1 and can be relatively close to or relatively far away from each other when the screw 2 is driven to rotate. The vise also comprises a switching mechanism, which is installed in the pliers body 1 and can realize switching between the self-centering mode and the adaptive mode by fixing or releasing the screw fixing block 3.

[0048] The switching mechanism is a rotating and releasing component that can keep the screw fixing block 3 fixed or floating freely in the pliers body 1 by tightening or loosening the screw fixing block 3. The rotating and releasing component is a spring-insertion type rotating and releasing device 6 that can be plugged into the pliers body 1 to achieve angle positioning.

[0049] The spring-insertion type rotary release device 6 includes a conversion block 61, a handle 62 and a spring locating pin 63. The conversion block 61 is rotatably connected to the pliers body 1 and the handle 62 and the spring locating pin 63 are respectively installed on the outer periphery. The interior of the pliers body 1 is provided with a locating pin slot. The handle 62 can drive the conversion block 61 to rotate and make the spring locating pin 63 plug into the locating pin slot when it is facing the locating pin slot. The conversion block 61 can tighten the screw fixing block 3 when the spring locating pin 63 is plugged into the locating pin slot.

[0050] The top of the conversion block 61 is provided with two oppositely arranged block upper protrusions 611, and the adjacent surfaces of the two block upper protrusions 611 are respectively provided with bevel corners 6113 formed by the intersection of a first bevel 6111 and a second bevel 6112, and the bottom of the screw fixing block 3 is provided with a lower protrusion 31 extending between the two bevel corners 6113. The two bevel corners 6113 can jointly limit the movement of the lower protrusion 31 when the spring locating pin 63 is plugged into the locating pin slot.

[0051] Working process of the present invention:

[0052] When the vise needs to be in self-centering mode, the handle 62 can be moved forward to drive the conversion block 61 to rotate forward until the two inclined corners 6113 jointly restrict the movement of the lower protrusion 31 (the screw fixing block 3 cannot move because it is blocked by the two inclined corners 6113 after rotation). At this time, the spring locating pin 63 also happens to be plugged into the locating pin slot to control the conversion block 61 at the specified corner.

[0053] If the vise needs to be in the adaptive mode, the above operation is performed in the reverse direction until the lower convex strip 31 is released by the two inclined corners 6113 .

[0054] Embodiment three:

[0055] See also Figures 8 to 11The clamping mode switchable vise of the present invention comprises a pliers body 1, a screw 2, a screw fixing block 3 and a jaw 4. The screw 2 passes through the screw fixing block 3 and both ends are respectively engaged with the jaw 4 through reverse threaded connection structures. The two jaws 4 are respectively slidably connected to the pliers body 1 and can be relatively close to or relatively far away from each other when the screw 2 is driven to rotate. The vise also comprises a switching mechanism, which is installed in the pliers body 1 and can realize switching between the self-centering mode and the adaptive mode by fixing or releasing the screw fixing block 3.

[0056] The switching mechanism is a lifting component 7 which can tighten or loosen the screw fixing block 3 so that the screw fixing block 3 can be kept fixed or floated freely in the pliers body 1 .

[0057] The lifting assembly 7 includes an internally threaded movable pin 71, a toothed bolt 72, a gear shaft 73 and a support bolt 74. The internally threaded movable pin 71 is arranged below the screw fixing block 3 and can only move up and down. The upper end of the toothed bolt 72 is threadedly connected to the internally threaded movable pin 71 and the lower end is respectively meshed with two gear shafts 73. The two gear shafts 73 are rotatably arranged in the pliers body 1 through the support bolts 74 respectively. The internally threaded movable pin 71 can tighten the screw fixing block 3 upward or loosen the screw fixing block 3 downward while the two gear shafts 73 are driven to rotate. The shape of the internally threaded movable pin 71 is not a round pin or a round pin with a limiting structure, thereby limiting the rotation in the pliers body 1 and can only move up and down.

[0058] The outer walls of the two gear shafts 73 are respectively provided with shaft body ring grooves 731, the bottom ends of the two support bolts 74 are respectively fixed to the pliers body 1 through threads, and the top ends are respectively inserted into the corresponding shaft body ring grooves 731 through pointed parts 741, the adjacent surfaces of the internal threaded movable pin 71 and the screw rod fixing block 3 are designed to be matched with the convex conical surface 711 and the concave conical surface 32, and the lower parts of the adjacent ends of the two support bolts 74 are also designed with protective covers 75 installed on the pliers body 1. This design utilizes the combination of gears and threads to The rotational motion is converted into linear motion, thereby utilizing the cooperation between the cone and the tapered hole to achieve a self-centering and adaptive switching effect (when the screw rod 51 is rotated forwardly with an Allen wrench, the self-centering switching can be completed by applying a tightening torque after resistance is felt or by using a torque wrench to tighten to a preset torque; otherwise, the adaptive switching is completed). In addition, the cooperation between the pointed portion 741 and the shaft ring groove 731 enables the two support bolts 74 to not only stably support the two gear shafts 73, but also does not affect the self-rotation of the two gear shafts 73.

[0059] Working process of the present invention:

[0060] When the vise is required to be in the self-centering mode, the gear shaft 73 can be turned forward to indirectly drive the toothed bolt 72 to rotate forward, and the internal threaded movable pin 71 will move upward during the forward rotation of the toothed bolt 72 until the convex conical surface 711 and the concave conical surface 32 interact and tighten (the screw fixing block 3 cannot move because it is tightened by the internal threaded movable pin 71).

[0061] If the vise needs to be in the adaptive mode, the above operation is performed in reverse until the screw fixing block 3 is loosened by the internal thread movable pin 71 .

[0062] Embodiment 4:

[0063] See also Figure 12 to Figure 14 The clamping mode switchable vise of the present invention comprises a pliers body 1, a screw 2, a screw fixing block 3 and a jaw 4. The screw 2 passes through the screw fixing block 3 and both ends are respectively engaged with the jaw 4 through reverse threaded connection structures. The two jaws 4 are respectively slidably connected to the pliers body 1 and can be relatively close to or relatively far away from each other when the screw 2 is driven to rotate. The vise also comprises a switching mechanism, which is installed in the pliers body 1 and can realize switching between the self-centering mode and the adaptive mode by fixing or releasing the screw fixing block 3.

[0064] The switching mechanism is a rotating and releasing component that can keep the screw fixing block 3 fixed or floating freely in the pliers body 1 by tightening or loosening the screw fixing block 3. The rotating and releasing component is a self-locking rotating and releasing device 8 that can achieve angle positioning through a mechanism with self-locking characteristics.

[0065] The self-locking release device 8 includes a turbine 81 and a worm 82 . The turbine 81 is rotatably connected to the pliers body 1 and meshes with the worm 82 . The worm 82 can tighten the screw fixing block 3 by using the turbine 81 when being driven to rotate a specified angle.

[0066] The top of the turbine 81 is provided with two oppositely arranged wheel body upper convex parts 811, and the adjacent surfaces of the two wheel body upper convex parts 811 are provided with flat parts 8111. The bottom of the screw fixing block 3 is provided with a lower convex column 33 extending between the two flat parts 8111, and the surface of the lower convex column 33 is provided with two oppositely arranged flat cut surfaces 331. The two flat parts 8111 can jointly limit the movement of the lower convex column 33 when rotating to be staggered with the two flat cut surfaces 331 (such as staggered to 90°). The teeth of the turbine 81 are arranged in a full circle or a non-full circle, and the outer wall of the worm 82 is provided with There is a rod body annular groove 821, in which a limit bolt 83 fixed to the pliers body 1 is inserted. With this design, the turbine 81 and the worm 82 can be used to change the rotational movement angle and the self-locking characteristics between the turbine 81 and the worm 82 can be used to limit the movement of the screw fixing block 3, thereby achieving a self-centering effect (when the worm 82 is driven to rotate forward using an Allen wrench, obvious resistance is felt, i.e., the self-centering switch is completed), wherein incomplete teeth (such as only teeth with a range of 90°) can limit the rotation angle of the turbine 81, thereby meeting the requirement of rotating to a specific angle.

[0067] Working process of the present invention:

[0068] When the vise needs to be in the self-centering mode, the worm 82 can be screwed in the forward direction to drive the turbine 81 to rotate in the forward direction until the two planar portions 8111 are offset from the two planar cut surfaces 331 (for example, when offset to 90°) and jointly restrict the movement of the lower boss 33 (the screw fixing block 3 cannot move because it is tightened by the two planar portions 8111). During the transmission process between the turbine 81 and the worm 82, due to the natural self-locking characteristics between the turbine 81 and the worm 82, the turbine 81 can only be driven to rotate by the worm 82, and the worm 82 cannot be driven to rotate by the turbine 81, that is, the turbine 81 can be controlled within a specified angle range.

[0069] If the vise needs to be in the adaptive mode, the above operation is performed in reverse until the lower convex strip 31 is released by the two flat portions 8111 .

[0070] Embodiment five:

[0071] See also Figure 15 to Figure 16The clamping mode switchable vise of the present invention also includes an auxiliary mechanism 9, which has an electric drive device 91 that can provide switching power for the switching mechanism and a pressure sensor that can monitor the clamping force of the two jaws 4 in real time, wherein the electric drive device 91 is a motor and is indirectly connected to the worm 82 through a coupling 92, and the electric drive device 91 is arranged on a base 94 together with the clamp body 1 through a support frame 95, and the electric drive device 91 can be directly connected to the machine tool control system or send and receive switch signals through a wireless switch 93, and in addition, the wireless switch 93 can be a Bluetooth wireless switch.

[0072] The rest is the same as in Example 4.

[0073] Working process of the present invention:

[0074] During the working process, the motor can be used to indirectly drive the worm 82 to rotate through the coupling 92 and realize the switching between the self-centering mode and the adaptive mode of the vise. In addition, the pressure threshold of the pressure sensor located at the two jaws 4 can be set, and then the pressure sensor can be used to monitor in real time whether the two jaws 4 exceed the pressure threshold during the action of clamping the workpiece. If the pressure threshold is exceeded, the vise is automatically switched from the self-centering mode to the adaptive mode; if the pressure threshold is not exceeded, the vise remains in the self-centering mode.

[0075] The above embodiments are intended to illustrate the present invention, not to limit the present invention. Any solution that is a simple transformation of the present invention belongs to the protection scope of the present invention.

Claims

1. A clamping mode switchable vise, comprising a clamp body (1), a screw (2), a screw fixing block (3) and jaws (4), wherein the screw (2) passes through the screw fixing block (3) and both ends are respectively engaged with the jaws (4) through reverse threaded connection structures, and the two jaws (4) are respectively slidably connected to the clamp body (1) and can be relatively close to or relatively far away from each other when the screw (2) is driven to rotate, characterized in that: It also includes a switching mechanism, which is installed in the caliper body (1) and can achieve switching between a self-centering mode and an adaptive mode by fixing or loosening a screw fixing block (3); The switching mechanism is a lifting component (7) that can tighten or loosen the screw fixing block (3) so that the screw fixing block (3) remains fixed or floats freely in the clamp body (1); The lifting assembly (7) comprises an internally threaded movable pin (71), a toothed bolt (72), a gear shaft (73) and a support bolt (74); the internally threaded movable pin (71) is arranged below the screw fixing block (3) and can only move up and down; the upper end of the toothed bolt (72) is threadedly connected to the internally threaded movable pin (71) and the lower end is respectively meshed with two gear shafts (73); the two gear shafts (73) are rotatably arranged in the pliers body (1) via the support bolt (74); the internally threaded movable pin (71) can tighten the screw fixing block (3) upward or loosen it downward while the two gear shafts (73) are driven to rotate.

2. The clamping mode switchable vise according to claim 1, characterized in that: The outer walls of the two gear shafts (73) are respectively provided with shaft body annular grooves (731); the bottom ends of the two support bolts (74) are respectively fixed to the pliers body (1) through threads and the top ends are respectively inserted into the corresponding shaft body annular grooves (731) through pointed parts (741); the adjacent surfaces of the internal thread movable pin (71) and the screw rod fixing block (3) are designed to be matched with each other. A protective cover (75) installed on the pliers body (1) is also designed below the adjacent ends of the two support bolts (74).

3. The clamping mode switchable vise according to claim 1 or 2, characterized in that: It also includes an auxiliary mechanism (9), wherein the auxiliary mechanism (9) has an electric drive device (91) that can provide switching power for the switching mechanism and a pressure sensor that can monitor the clamping force of the two jaws (4) in real time.

4. A clamping mode switchable vise, comprising a clamp body (1), a screw (2), a screw fixing block (3) and jaws (4), wherein the screw (2) passes through the screw fixing block (3) and both ends are respectively engaged with the jaws (4) through reverse threaded connection structures, and the two jaws (4) are respectively slidably connected to the clamp body (1) and can be relatively close to or relatively far away from each other when the screw (2) is driven to rotate, characterized in that: It also includes a switching mechanism, which is installed in the caliper body (1) and can achieve switching between a self-centering mode and an adaptive mode by fixing or loosening a screw fixing block (3); The switching mechanism is a rotating and releasing component that can be tightened or loosened to keep the screw fixing block (3) fixed or freely floating in the pliers body (1); the rotating and releasing component is a spring-insertion type rotating and releasing device (6) that can be plugged into the pliers body (1) to achieve angular positioning; The spring-insertion type rotating and releasing device (6) comprises a conversion block (61), a handle (62) and a spring positioning pin (63); the conversion block (61) is rotatably connected to the pliers body (1) and the handle (62) and the spring positioning pin (63) are respectively mounted on the outer periphery; a positioning pin slot is provided inside the pliers body (1); the handle (62) can drive the conversion block (61) to rotate and make the spring positioning pin (63) plug into the positioning pin slot when facing the positioning pin slot; the conversion block (61) can tighten the screw fixing block (3) when the spring positioning pin (63) is plugged into the positioning pin slot; The top of the conversion block (61) is provided with two block upper protrusions (611) arranged opposite to each other, and the adjacent surfaces of the two block upper protrusions (611) are respectively provided with inclined surface corners (6113) formed by the intersection of a first inclined surface (6111) and a second inclined surface (6112), and the bottom of the screw rod fixing block (3) is provided with a lower protrusion (31) extending between the two inclined surface corners (6113), and the two inclined surface corners (6113) can jointly limit the movement of the lower protrusion (31) when the spring positioning pin (63) is plugged into the positioning pin slot.

5. The clamping mode switchable vise according to claim 4, characterized in that: It also includes an auxiliary mechanism (9), wherein the auxiliary mechanism (9) has an electric drive device (91) that can provide switching power for the switching mechanism and a pressure sensor that can monitor the clamping force of the two jaws (4) in real time.

6. A clamping mode switchable vise, comprising a clamp body (1), a screw (2), a screw fixing block (3) and jaws (4), wherein the screw (2) passes through the screw fixing block (3) and both ends are respectively engaged with the jaws (4) through reverse threaded connection structures, and the two jaws (4) are respectively slidably connected to the clamp body (1) and can be relatively close to or relatively far away from each other when the screw (2) is driven to rotate, characterized in that: It also includes a switching mechanism, which is installed in the caliper body (1) and can achieve switching between a self-centering mode and an adaptive mode by fixing or loosening a screw fixing block (3); The switching mechanism is a rotating release component that can keep the screw fixing block (3) fixed or free floating in the pliers body (1) by tightening or loosening the screw fixing block (3), and the rotating release component is a self-locking rotating release device (8) that can achieve angular positioning through a mechanism with a self-locking characteristic; The self-locking rotating and releasing device (8) comprises a turbine (81) and a worm (82); the turbine (81) is rotatably connected to the pliers body (1) and meshes with the worm (82); the worm (82) can tighten the screw fixing block (3) by means of the turbine (81) when being driven to rotate to a specified angle; The turbine (81) is provided with two wheel body upper convex parts (811) arranged opposite to each other on the top, and the adjacent surfaces of the two wheel body upper convex parts (811) are provided with flat parts (8111). The bottom of the screw rod fixing block (3) is provided with a lower convex column (33) extending between the two flat parts (8111), and the surface of the lower convex column (33) is provided with two flat cut surfaces (331) arranged opposite to each other. The two flat parts (8111) can jointly limit the movement of the lower convex column (33) when the lower convex column (33) is rotated to be offset from the two flat cut surfaces (331). The teeth of the turbine (81) are arranged in a full circle or a non-full circle. The outer wall of the worm (82) is provided with a rod body annular groove (821), and a limit bolt (83) fixed to the clamp body (1) is inserted into the rod body annular groove (821).

7. The clamping mode switchable vise according to claim 6, characterized in that: It also includes an auxiliary mechanism (9), wherein the auxiliary mechanism (9) has an electric drive device (91) that can provide switching power for the switching mechanism and a pressure sensor that can monitor the clamping force of the two jaws (4) in real time.

Images