Half nut type fast adjusting bench vice

Abstract

The invention discloses a split nut type quick adjusting bench vice, which relates to the technical field of universal clamps, and is characterized by comprising a vice seat a and a vice seat b which is embedded in the vice seat a and can slide in the vice seat a, and further comprising a position adjusting piece which is rotationally connected to the vice seat b and is arranged in the vice seat a and can slide in the vice seat a. And the clamping adjusting piece can clamp and control the position adjusting piece through opening and closing of the threads. A half-nut opening and closing structure is adopted to conduct limiting control on the lead screw, the number of special clutch parts is greatly reduced, a transmission chain is simplified, meanwhile, one-key type rapid switching is achieved, meshing and separation of the nut structure and the lead screw are directly controlled through an opening and closing handle by means of the lever principle, operation is convenient and fast, complex special clutch components are not needed, and cost is low. And the material cost, the processing cost and the assembling cost are effectively reduced.

Description

Technical Field

[0001] This invention relates to the field of general-purpose clamping technology, and more specifically, to a quick-adjusting bench vise of the opening and closing nut type. Background Technology

[0002] A bench vise is a commonly used clamping tool in fitter work and mechanical assembly and machining. Its basic structure and working principle are well-known technologies. A typical ordinary bench vise mainly includes: a fixed vise body (mounted on the vise base), a movable vise body, a pair of jaws (mounted on the fixed vise body and the movable vise body respectively), a lead screw, and a fixed nut. Its working principle is as follows: rotating the handle drives the lead screw to rotate. Since the lead screw and the nut (fixed nut) fixed on the movable vise body form a helical pair, the rotational motion of the lead screw is converted into the linear motion of the movable vise body along the lead screw axis, thereby realizing the opening and closing of the jaws to clamp or release the workpiece. This structure is simple and reliable with a large clamping force. However, when adjusting the jaw opening to accommodate workpieces of different sizes, it is necessary to rotate the screw by continuously turning the handle. When the required axial movement distance is long, the adjustment process is time-consuming and inefficient. Currently, the most common structures mainly use a "clutch" or "rapid advance / retreat" mechanism. This solution typically includes: a screw, a main nut connected to the movable jaw, and an auxiliary drive mechanism (such as a lever, eccentric wheel, or another simple nut) that can be separated from or engaged with the main nut. When rapid movement is required, the engagement between the main nut and the screw is temporarily disengaged by operating a handle or trigger (or the auxiliary mechanism drives the jaw to slide). At this time, the movable jaw can be freely or lightly dragged along the screw axis to the vicinity of the target area. Then, the transmission relationship between the main nut and the screw is re-engaged, and fine adjustment and final clamping are performed by turning the handle. Existing quick adjustment solutions often have problems such as complex structure, many parts, high manufacturing cost, or not being simple and intuitive to operate (may require multiple steps or operating parts), and the clutch accuracy is prone to decrease after long-term use, resulting in gaps or shaking when clamping.

[0003] Therefore, in order to solve the above-mentioned technical problems, this application proposes a quick-adjusting bench vise with an opening and closing nut. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a quick-adjusting bench vise with an opening and closing nut.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a quick-adjusting bench vise with an opening and closing nut type, comprising a vise seat a and a vise seat b fitted within the vise seat a and capable of sliding within the vise seat a, further comprising a position adjusting component rotatably connected to the vise seat b and a clamping adjusting component disposed within the vise seat a and capable of controlling the position adjusting component through the opening and closing of a threaded structure; wherein, the position adjusting component comprises a rotating handle that limits rotation on the vise seat b and a lead screw with one end connected to the rotating handle and the other end extending inside the vise seat b; the clamping adjusting component comprises an inner fixing plate disposed on a mounting plate at the bottom of the vise seat a and a clamping seat a located beside the inner fixing plate and having a semi-threaded groove a, wherein the inner fixing plate is provided with a rotatably connected connecting plate, the connecting plate is provided with a clamping seat b, and the clamping seat b is provided with a semi-threaded groove b that can be combined with the semi-threaded groove a of the clamping seat a to form a nut structure.

[0006] Preferably, the rotating part of the connecting plate is provided with an opening and closing handle extending to the outside of the clamp seat a, and a locking pin is provided between the inner fixing plate and the connecting plate to control the rotation of the opening and closing handle.

[0007] Preferably, a strip-shaped sliding hole is provided on the outer wall of the clamp seat b, and the position of the strip-shaped sliding hole corresponds to that of the opening and closing handle.

[0008] Preferably, clamping ends a and b are provided at one end of the clamping area relative to the clamping area, which can clamp the object. The clamping ends a and b are the same size and are in corresponding positions.

[0009] Preferably, the lead screw passes through the gap of the inner fixed plate and is connected to the nut structure formed by the combination of the semi-threaded groove a and the semi-threaded groove b, and a gap distance is provided between the end of the lead screw and the inner wall of the clamp seat b.

[0010] Preferably, a gap distance is provided between the top of the clamp seat a and the clamp seat b, and the strip-shaped sliding hole is larger than the connecting rod of the opening and closing handle.

[0011] Compared with the prior art, the present invention has the following beneficial effects: 1. This invention uses a half-nut opening and closing structure to limit the control of the lead screw, and links it with a connecting plate, an inner fixing plate and a single opening and closing handle. By integrating the core function of rapid adjustment into the simple and direct mechanical principle of the opening and closing action of the nut structure, the number of special clutch parts is greatly reduced and the transmission chain is simplified. This makes the overall structure more compact and robust, reduces wear points, and thus improves the long-term reliability and clamping stability of the product, and reduces the failure rate and maintenance requirements.

[0012] 2. This invention achieves "one-button" quick switching. Simply lift the "opening and closing handle" upwards or press it downwards to directly control the engagement and disengagement of the nut structure and the lead screw through the lever principle. This operation method is extremely intuitive, with a single and rapid action.

[0013] 3. The present invention has a simplified structure, and most of the parts are conventionally machined parts. It does not require complex special clutch components. Therefore, while achieving the same or even better rapid adjustment function, it effectively reduces the material, processing and assembly costs. Attached Figure Description

[0014] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings: Figure 1 This is a structural diagram of the vise in this invention; Figure 2 This is a partial view of the overall vise in this invention; Figure 3 This is a bottom view of the overall vise in this invention; Figure 4 This is a diagram showing the internal connections of the vise in this invention; Figure 5 This is a connection diagram of clamp a and clamp b in this invention; Figure 6 This is a connection diagram between the lead screw and the clamping adjustment component in this invention; Figure 7 This is a structural diagram of the clamping adjustment component in this invention; Figure 8 This is a structural diagram of the clamp seat b in this invention.

[0015] 1. Clamp seat a; 101. Mounting plate; 102. Clamping end a; 2. Clamp seat b; 201. Clamping end b; 202. Strip-shaped sliding hole; 3. Position adjusting component; 301. Rotating handle; 302. Lead screw; 4. Clamping adjustment component; 401. Inner fixing plate; 402. Clamping seat a; 403. Connecting plate; 404. Clamping seat b; 405. Opening and closing handle. Detailed Implementation

[0016] Example 1 like Figure 1-8As shown, the present invention provides a quick-adjusting bench vise of the opening and closing nut type, including a vise seat a1 and a vise seat b2 that is fitted into the vise seat a1 and can slide within the vise seat a1, and also includes a position adjusting member 3 that is rotatably connected to the vise seat b2 and a clamping adjusting member 4 that is disposed within the vise seat a1 and can control the position adjusting member 3 through the opening and closing form of the threaded structure. The position adjustment component 3 includes a rotating handle 301 that limits the rotation of the clamp seat b2 and a lead screw 302 with one end connected to the rotating handle 301 and the other end extending into the clamp seat b2. The clamping adjustment component 4 includes an inner fixing plate 401 mounted on the bottom mounting plate 101 of the clamp seat a1 and a clamping seat a402 located beside the inner fixing plate 401 and having a semi-threaded groove a. The inner fixing plate 401 is provided with a rotatably connected connecting plate 403, and the connecting plate 403 is provided with a clamping seat b404. The clamping seat b404 is provided with a semi-threaded groove b that can be combined with the semi-threaded groove a of the clamping seat a402 to form a nut structure.

[0017] In summary, by changing the traditional integral fixing nut to a nut structure composed of two semi-threaded grooves on two clamping seats, and using the linkage mechanism of the opening and closing handle 405 to control the opening and closing of the clamping seat b404, the position adjustment function is realized. Lifting the opening and closing handle 405 causes the semi-threaded groove b of the clamping seat b404 to disengage from the lead screw 302, allowing the clamping seat b2 to slide freely on the clamping seat a1. In addition to the above functions, it also includes a precision clamping function. The lowering of the opening and closing handle 405 causes the semi-threaded groove b on the clamping seat b404 to engage with the lead screw 302, and the clamping seat a402 with the semi-threaded groove a clamps the lead screw 302 to achieve the effect of screw transmission. The entire switching process relies solely on the operation of a single opening and closing handle 405. The action is simple and reliable, achieved through linkage, without the need for a complex external clutch device.

[0018] Further explanation, such as Figure 1 , Figure 2 , Figure 6 and Figure 7 As shown, the rotating part of the connecting plate 403 is provided with an opening and closing handle 405 extending to the outside of the clamp seat a1, and a locking pin is provided between the inner fixing plate (401) and the connecting plate (403) to control the rotation of the opening and closing handle 405. For the latch (not shown in the figure), this type of latch is a snap-fit ​​structure with opening and closing function. Other components with adjustable limits, such as snap-fit ​​with limit spring, can also be used. The opening and closing handle 405 is connected to the connecting plate 403 through the snap-fit, and the opening and closing of the connecting plate 403 is limited and adjusted by the latch.

[0019] Specifically, such as Figure 6, Figure 7 and Figure 8 As shown, a strip-shaped sliding hole 202 is provided on the outer wall of the clamp seat b2, and the position of the strip-shaped sliding hole 202 corresponds to that of the opening and closing handle 405; The strip-shaped sliding hole 202 restricts the movement distance of the clamp seat b2 on the one hand, and provides a through gap for the opening and closing handle 405 on the other hand.

[0020] like Figure 1 , Figure 2 As shown, clamping heads a102 and b201, which can clamp objects, are provided at one end of clamping seat a1 and clamping seat b201 relative to the clamping area. The clamping head a102 and clamping head b201 are the same size and are in corresponding positions. After the two clamping seats are partially threaded, the clamping seat b2 can be moved by the lead screw 302 to realize the clamping operation of clamping head a102 and clamping head b201 on the object.

[0021] like Figure 4 As shown, the lead screw 302 passes through the gap of the inner fixed plate 401 and is connected to the nut structure formed by the combination of the half-threaded groove a and the half-threaded groove b. A gap is provided between the end of the lead screw 302 and the inner wall of the clamp seat b2. This allows for greater adjustment freedom of the lead screw 302 and facilitates its disassembly and replacement. Additionally, as... Figure 1 , Figure 2 As shown, a gap distance is set between clamp seat a1 and clamp seat b2. The strip-shaped sliding hole 202 is larger than the connecting rod of the opening and closing handle 405. By setting the gap distance, after the screw 302 is released from locking, the clamp seat b2 and the screw 302 can be finely adjusted, which facilitates the quick adjustment of the position of the clamp seat b2 and avoids the semi-thread on the clamp seat a402 from limiting the screw 302.

[0022] Working methods and operating procedures: This vise has two working modes: rapid traverse mode and normal clamping mode. Switching between the two modes is achieved by operating the opening and closing handle 405.

[0023] Fast movement mode: When it is necessary to quickly and extensively adjust the position of the movable jaws to accommodate workpieces of different sizes, the operator lifts the opening and closing handle 405 upwards; The lifting action of the opening and closing handle 405 causes the connecting plate 403 to rotate the clamping seat b404 through the locking pin, thereby achieving the separation of the nut structure; Although clamping seat a402 is still engaged with lead screw 302, the clamping seat b404 disengages, releasing the nut structure's clamping constraint on lead screw 302. By finely adjusting clamp seat b2 upwards, lead screw 302 disengages from the threads on clamping seat a402, allowing for rapid movement of clamp seat b2. This process does not require turning handle 301, greatly saving coarse adjustment time.

[0024] Normal clamping mode: When the clamp seat b2 slides to the vicinity of the desired position, the operator presses down the opening and closing handle 405, which drives the connecting plate 403 through the locking pin to make the clamping seat b404 rotate, achieving the combination of the nut structure. By rotating the handle 301 to drive the lead screw 302 to rotate, the clamp seat a1 and clamp seat b2 can clamp the object.

[0025] Example 2 Compared to Embodiment 1, the adjustment mechanism of the opening and closing handle 405 to the clamping seat b404 is replaced with a rotary lever-type linkage mechanism, specifically including the following: Instead of the original up-and-down swinging motion, the opening and closing handle 405 is replaced with a lever or knob that can rotate 90° or 180° around its axis. The lever is fixed on a drive shaft that extends into the clamp seat a1. The end of the drive shaft is equipped with a cam or eccentric wheel. When the lever is rotated, the cam surface acts directly on the connecting plate 403 or a specific part of the clamping seat b404, pushing it to move linearly, thereby realizing the combination and separation of the nut structure. This solution also enables single-handed single-action operation and may save more external space.

[0026] Example 3 Compared to Embodiment 1, the opening and closing form of the nut structure is changed to a split double half-nut combination structure, specifically including the following: The independent clamping seat a402 is eliminated, and the nut assembly is designed as two completely symmetrical "half nuts". The two half nuts are connected side by side or top by bottom through pins or guide rails to form a complete threaded hole. The rear of the two half nuts are linked to a common opening and closing handle 405 through inclined planes or connecting rods. When the opening and closing handle 405 is turned, the two half nuts move synchronously in opposite directions through internal mechanisms (such as symmetrically arranged connecting plates 403), so that they can simultaneously disengage from or clamp the lead screw 302. This solution has a more uniform clamping force distribution.

[0027] Example 4 Based on Embodiment 1, an automatic spring reset and manual locking function are added. A reset spring is set on the clamping seat b404 or the linkage mechanism so that its default state is in the closed position (i.e., normal clamping mode). The opening and closing handle 405 can be designed with a buckle or button. When rapid movement is required, the opening and closing handle 405 is lifted upward to overcome the spring force and lock it in a certain open position. At this time, the clamping seat b404 remains disengaged. After adjustment, the buckle release button is pressed, and the opening and closing handle 405 automatically springs back to the lowered position under the action of the spring, driving the clamping seat b404 to close. This solution provides a more tactile and confirmatory operation.

[0028] Example 5 Compared to Embodiment 1, the inner fixing plate 401 and connecting plate 403 are omitted. The opening and closing handle 405 is directly hinged to the clamp seat b2 through a fulcrum. The inner end (acting end) is made into an inclined surface or directly abuts against the side of the clamping seat b404. When the outer operating end of the opening and closing handle 405 is lifted upward, its inner acting end moves downward or to the side through the lever principle, directly pushing open the clamping seat b404, causing it to displace and disengage from the lead screw 302. This solution has the fewest parts, but may require a more precise lever ratio design and a greater operating force.

[0029] Example 6 This solution alters the "opening and closing" mechanism of the nut structure. The nut structure (the part that engages with the lead screw 302) is designed as a single unit, but its connection to the clamp seat b2 is not completely fixed. A sliding pin or wedge, controlled by the opening and closing handle 405, is installed on the clamp seat b2. In normal clamping mode, this pin is inserted, locking the nut assembly to the clamp seat b2 and allowing them to move synchronously. When rapid movement is required, the pin is pulled out via the opening and closing handle 405. At this time, the nut structure and the lead screw 302 remain engaged, but the clamp seat b2 can slide freely relative to the nut structure and the lead screw 302. After sliding into position, the pin is inserted to re-lock. This solution achieves the same rapid movement effect, but the separation principle is different.

[0030] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention in any way. Those skilled in the art can readily implement the invention based on the accompanying drawings and the description above. However, any modifications, alterations, or variations made by those skilled in the art without departing from the scope of the present invention, using the disclosed technical content, are equivalent embodiments of the present invention. Furthermore, any modifications, alterations, or variations made to the above embodiments based on the essential technology of the present invention are still within the protection scope of the present invention.

Claims

1. A quick-adjusting bench vise with an opening and closing nut, comprising a vise base a (1) and a vise base b (2) fitted into the vise base a (1) and capable of sliding within the vise base a (1), characterized in that, It also includes a position adjustment component (3) rotatably connected to the clamp seat b (2) and a clamping adjustment component (4) disposed in the clamp seat a (1) and capable of controlling the position adjustment component (3) through the opening and closing of the threaded structure. The position adjustment component (3) includes a rotating handle (301) that limits the rotation of the clamp seat b (2) and a lead screw (302) with one end connected to the rotating handle (301) and the other end extending into the clamp seat b (2). The clamping adjustment component (4) includes an inner fixing plate (401) disposed on the bottom mounting plate (101) of the clamp seat a (1) and a clamping seat a (402) located beside the inner fixing plate (401) and having a semi-threaded groove a. The inner fixing plate (401) is provided with a rotatably connected connecting plate (403), and the connecting plate (403) is provided with a clamping seat b (404). The clamping seat b (404) is provided with a semi-threaded groove b that can be combined with the semi-threaded groove a of the clamping seat a (402) to form a nut structure.

2. The quick-adjusting bench vise of the opening and closing nut type according to claim 1, characterized in that, The rotating part of the connecting plate (403) is provided with an opening and closing handle (405) extending to the outside of the clamp seat a (1), and a locking pin is provided between the inner fixing plate (401) and the connecting plate (403) to control the rotation of the opening and closing handle (405).

3. The quick-adjusting bench vise of the opening and closing nut type according to claim 2, characterized in that, The outer wall of the clamp seat b (2) is provided with a strip-shaped sliding hole (202), and the position of the strip-shaped sliding hole (202) corresponds to that of the opening and closing handle (405).

4. The quick-adjusting bench vise of the opening and closing nut type according to claim 1, characterized in that, The clamping seats a (1) and b (2) are provided with clamping ends a (102) and b (201) for clamping objects at one end relative to the clamping area. The clamping ends a (102) and b (201) are the same size and are in the same position.

5. The quick-adjusting bench vise of the opening and closing nut type according to claim 1, characterized in that, The lead screw (302) passes through the gap of the inner fixing plate (401) and is connected to the nut structure formed by the combination of the semi-threaded groove a and the semi-threaded groove b. A gap distance is provided between the end of the lead screw (302) and the inner wall of the clamp seat b (2).

6. A quick-adjusting bench vise with an opening and closing nut type according to claim 3, characterized in that, A gap is provided between the clamp seat a (1) and the clamp seat b (2), and the strip-shaped sliding hole (202) is larger than the connecting rod of the opening and closing handle (405).

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