Jaw vice for CNC machine tool

Abstract

The utility model relates to the technical field of vises, in particular to a vise for a CNC (computer numerical control) machine tool, which comprises a pedestal and a movable seat, the movable seat is slidably connected with the pedestal, a fixed clamp is mounted at the edge of the top end of the pedestal, and a clamping component is mounted at the top of the movable seat; the clamping assembly comprises an L-shaped mounting base, a transmission box, a motor, a distance adjusting base, a movable clamp and a screw rod b, the transmission box is mounted on one side of the L-shaped mounting base, the motor is fixedly arranged on the side wall of the transmission box, two parallel sliding grooves b are formed in the edge of the top of the L-shaped mounting base, and the screw rod a with the large screw pitch is adopted for driving a movable base to conduct long-stroke rapid movement; the movable clamp is installed on the distance adjusting base and driven by the screw rod b with the small screw pitch to move slowly, the effect that the movable clamp is driven to accurately clamp materials in a short stroke is achieved, meanwhile, the screw rod b comprises the two reverse-thread screw rods, torque can be balanced, the clamping force of the screw rod b is balanced, and clamping force deviation is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of vises, in particular to a vise for a CNC machine tool. Background Technique

[0002] A bench vise, also known as a vise, is a general fixture used to clamp workpieces. It is installed on a workbench to firmly clamp the workpieces to be machined and is a machine tool accessory used to clamp the workpieces to be machined when cooperating with a machine tool for processing.

[0003] The vise is one of the important tools in machining, but there are still certain problems: 1) For relatively fragile precision machined parts, it cannot adapt to the rapid clamping of the clamping jaws driven by a lead screw with a coarse pitch; 2) The clamping jaws are not convenient for loading and unloading. When machining various different types of materials and the clamping jaws need to be frequently replaced, the work efficiency will be reduced. Therefore, in view of the above current situation, there is an urgent need to develop a vise for a CNC machine tool to overcome the deficiencies in current practical applications and meet the current requirements. Content of the Utility Model

[0004] The purpose of the utility model is to provide a vise for a CNC machine tool to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A vise for a CNC machine tool includes a pedestal and a moving seat. The moving seat is slidably connected to the pedestal. A fixed fixture is installed at the top edge of the pedestal, and a clamping assembly is installed on the top of the moving seat.

[0006] The clamping assembly includes an L-shaped mounting seat, a transmission box, a motor, an adjusting seat, a moving fixture, and a screw b. The transmission box is installed on one side of the L-shaped mounting seat, and the motor is fixedly arranged on the side wall of the transmission box. Two mutually parallel chutes b are opened at the top edge of the L-shaped mounting seat. The screw b is embedded inside the chute b. The screw b is driven and connected to the motor through the transmission box. Two sliders b are fixedly arranged at the bottom of the adjusting seat. The sliders b are slidably connected to the chute b. The moving fixture is installed on one side of the adjusting seat.

[0007] There are two screw b in total, and the thread directions of the two screw b are opposite. An internally threaded through hole adapted to the screw b is opened at the middle position of the slider b. Specifically, using two reverse-threaded screws can balance the load and reduce the deviation caused by uneven torque of a single screw, thereby improving the motion stability and positioning accuracy of the system.

[0008] Preferably, an inner groove is opened in the middle position of the pedestal, a rotatable screw a is installed inside the inner groove, a chip removal groove connected to the inner groove is opened on the side of the pedestal, a slide groove a is opened on the side wall of the pedestal, and a fixture mounting seat for installing a fixed fixture is welded on the top edge of the pedestal. Specifically, the inner groove and chip removal groove can allow the processing debris to be discharged quickly, and the fixture mounting seat is installed with a card slot, locking shaft, limit frame, spring and chuck consistent with the distance adjustment seat structure.

[0009] Preferably, an internally threaded sleeve is installed in the middle position of the bottom of the movable seat, and two relatively distributed sliders a are welded to the bottom edge of the movable seat. The internally threaded sleeve is adapted to the screw a, and the slider a is slidably connected to the slide groove a. Specifically, there is a large gap between the internally threaded sleeve and the inner groove, and the processing debris can fall freely through the gap.

[0010] Preferably, a side wall of the distance adjusting seat is provided with a card slot extending into the interior thereof, a movable locking shaft is passed through the top middle position of the distance adjusting seat, a chuck is nested and installed in the middle position of the locking shaft, a limit frame is installed in the top middle position of the distance adjusting seat, a spring is installed between the chuck and the limit frame, and two parallel sliding blocks b are installed at the bottom of the distance adjusting seat. Specifically, the locking shaft is driven by the spring to match the locking groove of the lock tongue to achieve a quick locking effect.

[0011] Preferably, an integrally formed locking tongue is provided on one side of the movable clamp, and a locking groove matched with the locking shaft is provided in the middle position of the top of the locking tongue. Specifically, by matching the locking tongue with the slot and the locking groove with the locking shaft, a quick connection between the movable clamp and the distance adjusting seat is achieved, thereby ensuring the connection stability and improving the loading and unloading efficiency.

[0012] Preferably, a driving wheel and two driven wheels are embedded inside the transmission box, a synchronous belt for transmission is installed between the driving wheel and the driven wheels, a guide wheel is installed between the transmission box and the synchronous belt, one end of the two screw rods b is connected to the driven wheel shaft, and transmission is carried out through the transmission box, thereby driving the two screw rods b to rotate synchronously.

[0013] Compared with the prior art, the utility model provides a vise for CNC machine tools, which has the following beneficial effects:

[0014] 1. It uses a screw a with a thicker pitch to drive the moving seat to move quickly over a long stroke, while the moving clamp is installed on the pitch-adjusting seat and is driven slowly by a screw b with a thinner pitch, so that the moving clamp can accurately clamp the material with a short stroke. At the same time, the screw b includes two reverse screws, which can balance the torque and balance the clamping force to avoid the deviation of the clamping force;

[0015] 2. It uses a locking shaft and a spring to connect the clamp. This quick method is simple and fast. It can ensure stability while improving loading and unloading efficiency. Brief Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings:

[0017] Figure 1 It is a front structural schematic diagram of the present invention;

[0018] Figure 2 It is a side structural schematic diagram of the present invention;

[0019] Figure 3 It is a longitudinal sectional side view of the pedestal of the present invention;

[0020] Figure 4 It is a structural schematic diagram of the clamping assembly of the present invention;

[0021] Figure 5 It is a longitudinal sectional side view of the distance adjusting seat of the present invention;

[0022] Figure 6 It is a longitudinal sectional side view of the transmission box of the present invention.

[0023] In the figure: 10, pedestal; 101, inner groove; 102, chip removal groove; 103, chute a; 104, fixture mounting seat; 105, screw a; 20, moving seat; 201, internal thread sleeve; 202, slider a; 30, clamping assembly; 301, L-shaped mounting seat; 302, transmission box; 3021, driving wheel; 3022, driven wheel; 3023, synchronous belt; 3024, guide wheel; 303, motor; 304, distance adjusting seat; 3041, card slot; 3042, locking shaft; 3043, limiting frame; 3044, spring; 3045, chuck; 3046, slider b; 305, moving fixture; 3051, locking tongue; 3052, locking groove; 306, chute b; 307, screw b; 40, fixed fixture. Detailed Description of the Preferred Embodiments

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0025] In the present utility model, unless otherwise clearly specified and defined, terms such as "installation", "connection", "linkage", "fixation" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0026] Embodiment:

[0027] Please refer to Figures 1-6 , the present utility model provides a technical solution: a vise for a CNC machine tool, including a pedestal 10 and a moving seat 20. The moving seat 20 is slidably connected to the pedestal 10. A fixed fixture 40 is installed at the top edge of the pedestal 10, and a clamping assembly 30 is installed on the top of the moving seat 20;

[0028] The clamping assembly 30 includes an L-shaped mounting seat 301, a transmission box 302, a motor 303, an adjustment seat 304, a movable fixture 305, and a screw b307. The transmission box 302 is installed on one side of the L-shaped mounting seat 301, the motor 303 is fixedly arranged on the side wall of the transmission box 302. Two mutually parallel chutes b306 are opened at the top edge of the L-shaped mounting seat 301. The screw b307 is embedded in the interior of the chute b306. The screw b307 is drivingly connected to the motor 303 through the transmission box 302. Two sliders b3046 are fixedly arranged at the bottom of the adjustment seat 304. The sliders b3046 are slidably connected to the chute b306, and the movable fixture 305 is installed on one side of the adjustment seat 304;

[0029] There are two screw b307 in total, and the thread directions of the two screw b307 are opposite. An internally threaded through hole adapted to the screw b307 is opened at the middle position of the slider b3046. Specifically, using two reverse-threaded screws can balance the load and reduce the deviation caused by uneven torque of a single screw, thereby improving the motion stability and positioning accuracy of the system.

[0030] Preferably, an inner groove 101 is opened at the middle position of the pedestal 10. A rotatable screw a105 is installed in the interior of the inner groove 101. A chip removal groove 102 communicating with the inner groove 101 is opened on the side of the pedestal 10. A chute a103 is opened on the side wall of the pedestal 10. A fixture mounting seat 104 for installing the fixed fixture 40 is welded at the top edge of the pedestal 10. Specifically, the arranged inner groove 101 and chip removal groove 102 can quickly discharge the machining debris. The interior of the fixture mounting seat 104 is provided with a card slot 3041, a locking shaft 3042, a limiting frame 3043, a spring 3044, and a chuck 3045 having the same structure as the adjustment seat 304.

[0031] Preferably, an internal thread sleeve 201 is installed at the middle position of the bottom of the moving seat 20, and two oppositely distributed sliding blocks a202 are welded to the bottom edge of the moving seat 20. The internal thread sleeve 201 is adapted to the screw a105, and the sliding block a202 is slidably connected to the chute a103. Specifically, there is a large gap between the internal thread sleeve 201 and the inner groove 101, and the machining debris can freely fall through the gap.

[0032] Preferably, a card slot 3041 extending to its interior is provided on the side wall of the distance adjusting seat 304. A movable locking shaft 3042 is passed through the middle position of the top of the distance adjusting seat 304. A chuck 3045 is nested and installed at the middle position of the locking shaft 3042. A limiting frame 3043 is installed at the middle position of the top of the distance adjusting seat 304. A spring 3044 is installed between the chuck 3045 and the limiting frame 3043. Two parallel sliding blocks b3046 are installed at the bottom of the distance adjusting seat 304. Specifically, the spring 3044 drives the locking shaft 3042 to match with the locking groove 3052 of the locking tongue 3051 to achieve a quick locking effect.

[0033] Preferably, a locking tongue 3051 is integrally formed on one side of the movable fixture 305. A locking groove 3052 adapted to the locking shaft 3042 is provided at the middle position of the top of the locking tongue 3051. Specifically, the quick connection between the movable fixture 305 and the distance adjusting seat 304 is realized by the matching of the locking tongue 3051 with the card slot 3041 and the matching of the locking groove 3052 with the locking shaft 3042, which ensures the connection stability and improves the loading and unloading efficiency at the same time.

[0034] Preferably, a driving wheel 3021 and two driven wheels 3022 are respectively embedded and installed inside the transmission box 302. A synchronous belt 3023 for transmission is installed between the driving wheel 3021 and the driven wheels 3022. A guide wheel 3024 is installed between the transmission box 302 and the synchronous belt 3023. One end of each of the two screw rods b307 is shaft-connected to the driven wheel 3022. The transmission is carried out through the provided transmission box 302, so as to drive the two screw rods b307 to rotate synchronously.

[0035] Working principle: First, install the pedestal 10 on the CNC machine tool. When it is necessary to clamp the workpiece, first use an external motor to drive the screw a105 to cooperate with the internal thread sleeve 201 to drive the moving seat 20 to move to an appropriate position and then stop. Subsequently, start the motor 303, cooperate with the transmission box 302 to drive the two screw rods b307 to rotate, so as to drive the distance adjusting seat 304 and the movable fixture 305 inside it to displace, and cooperate with the fixed fixture 40 on the opposite side to clamp the workpiece.

[0036] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the said element.

Claims

1. A vise for CNC machine tools, characterized in that: It comprises a pedestal (10) and a movable seat (20), wherein the movable seat (20) is slidably connected to the pedestal (10), a fixed clamp (40) is installed on the top edge of the pedestal (10), and a clamping assembly (30) is installed on the top of the movable seat (20); The clamping assembly (30) comprises an L-shaped mounting seat (301), a transmission box (302), a motor (303), a distance adjusting seat (304), a movable clamp (305) and a screw rod b (307); the transmission box (302) is mounted on one side of the L-shaped mounting seat (301); the motor (303) is fixedly mounted on a side wall of the transmission box (302); two mutually parallel sliding grooves b (306) are opened on the top edge of the L-shaped mounting seat (301); the screw rod b (307) is embedded in the interior of the sliding grooves b (306); the screw rod b (307) is drivingly connected to the motor (303) through the transmission box (302); two sliding blocks b (3046) are fixedly mounted on the bottom of the distance adjusting seat (304); the sliding blocks b (3046) are slidably connected to the sliding grooves b (306); and the movable clamp (305) is mounted on one side of the distance adjusting seat (304); There are two screw rods b (307) in total, and the thread directions of the two screw rods b (307) are opposite. An internal thread through hole matching the screw rod b (307) is opened in the middle position of the slider b (3046).

2. A CNC machine tool vise according to claim 1, characterized in that: An inner groove (101) is provided in the middle of the pedestal (10), a rotatable screw a (105) is installed inside the inner groove (101), a chip removal groove (102) connected to the inner groove (101) is provided on the side of the pedestal (10), a sliding groove a (103) is provided on the side wall of the pedestal (10), and a clamp mounting seat (104) for mounting a fixed clamp (40) is welded to the top edge of the pedestal (10).

3. A CNC machine tool vise according to claim 1, characterized in that: An internally threaded sleeve (201) is installed at the middle position of the bottom of the movable seat (20), and two relatively distributed sliding blocks a (202) are welded to the bottom edge of the movable seat (20), the internally threaded sleeve (201) is adapted to the screw rod a (105), and the sliding block a (202) is slidably connected to the slide groove a (103).

4. A CNC machine tool vise according to claim 1, characterized in that: The side wall of the distance adjusting seat (304) is provided with a slot (3041) extending into the inside thereof; a movable locking shaft (3042) is passed through the middle position of the top of the distance adjusting seat (304); a chuck (3045) is nested and installed in the middle position of the locking shaft (3042); a limiting frame (3043) is installed in the middle position of the top of the distance adjusting seat (304); a spring (3044) is installed between the chuck (3045) and the limiting frame (3043); and two parallel sliding blocks b (3046) are installed at the bottom of the distance adjusting seat (304).

5. The CNC machine tool vise according to claim 1, characterized in that: An integrally formed locking tongue (3051) is provided on one side of the movable clamp (305), and a locking groove (3052) adapted to the locking shaft (3042) is provided at the middle position of the top of the locking tongue (3051).

6. A CNC machine tool vise according to claim 1, characterized in that: A driving wheel (3021) and two driven wheels (3022) are respectively embedded and installed inside the transmission box (302); a synchronous belt (3023) for transmission is installed between the driving wheel (3021) and the driven wheels (3022); a guide wheel (3024) is installed between the transmission box (302) and the synchronous belt (3023); one end of the two screw rods b (307) is connected to the shaft of the driven wheel (3022).

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