A vice positioning device for a numerical control machine tool

Abstract

The utility model discloses a vice positioning device for numerical control machine tool, including base, is set up the limiting slot of front and rear through on the base, the left and right movable chuck is symmetrically arranged on the limiting slot top, and left and right positioning assembly respectively drive left and right movable chuck sliding fit in the limiting slot, and the utility model vice positioning device sets up the limiting slot on the base and the left and right movable chuck of symmetric setting, and combines the left and right positioning assembly of independent drive in the limiting slot, realizes the automatic clamping and adjustment of work piece, and left and right positioning assembly respectively by motor piece drive driving tooth belt pulley piece drive driven tooth belt pulley piece, and then through slide rail subassembly control movable chuck sliding in the limiting slot, thereby the quick positioning and clamping of different size work piece are adapted, and the problem that manual vice's manual operation is inconvenient to adjust is avoided, and the defect that pneumatic or hydraulic vice needs external auxiliary equipment is overcome simultaneously, has the effect that operation automation and maintenance are simple.

Description

Technical Field

[0001] This utility model relates to the field of CNC machining technology, specifically to a vise positioning device for CNC machine tools. Background Technology

[0002] As described in the published patent "Electric Vise" with publication number CN212044280U, "A vise is a general-purpose tool installed on a workbench to clamp and hold workpieces. It is an essential tool for mechanical production and maintenance. Currently, known bench vises are all made by manually turning the handle to rotate the screw, which pushes the nut on the movable jaw to move the movable jaw closer to the fixed jaw body to clamp the workpiece. Manually turning the handle requires a lot of force, resulting in high labor intensity, slow speed, and low work efficiency."

[0003] As described in the published patent CN217371432U, "An Electric Vise for CNC Machine Tools," vises are an essential tool in CNC machine tool production, primarily used for clamping workpieces to facilitate fast and stable machining. Currently, vises used on machine tools are mainly classified into four types based on their structure: manual vises, pneumatic vises, hydraulic vises, and electric vises. Manual vises are more common on machine tools. During operation, the workpiece is clamped by manually rotating the screw handle to drive the clamping blocks in a linear motion. The operator adjusts the clamping force by understanding the physical properties of different materials and observing the shape of the workpiece. Pneumatic and hydraulic vises offer convenient and quick clamping, but they suffer from difficulties in adjusting the clamping force and require auxiliary equipment such as air or hydraulic power sources.

[0004] In summary, in the relevant technologies of CNC machine tools, some vises use manual, pneumatic or hydraulic power as the power source, which has the problem of inconvenient adjustment. In particular, pneumatic vises and hydraulic vises also require related auxiliary equipment, making assembly and maintenance troublesome. Utility Model Content

[0005] To overcome the shortcomings mentioned above, this utility model aims to provide a technical solution for a vise positioning device for CNC machine tools that can solve the aforementioned problems.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A vise positioning device for CNC machine tools includes a base, on which a limiting groove is formed through the front and back. Left and right movable chucks are symmetrically arranged above the limiting groove. Left and right positioning components are symmetrically installed in the limiting groove. The left and right positioning components respectively drive the left and right movable chucks to slide and engage in the limiting groove. The left positioning component includes a left motor component and a left slide rail component installed in the limiting groove. The left motor component and the left slide rail component are fixed in the limiting groove. A left active toothed pulley component is installed on the output shaft of the left motor component. A left driven toothed pulley component is installed on the left slide rail component. The left active toothed pulley component drives the left driven toothed pulley component. The left slide rail component is fixedly connected to the left movable chuck and drives the left movable chuck to slide and adjust within the limiting groove. The right positioning component includes a right motor component and a right slide rail component installed in the limiting groove. The right motor component and the right slide rail component are fixed in the limiting groove. A right driving toothed pulley component is installed on the output shaft of the right motor component, and a right driven toothed pulley component is installed on the right slide rail component. The right driving toothed pulley component drives the right driven toothed pulley component. The right slide rail component is fixedly connected to the right movable chuck and drives the right movable chuck to slide and adjust in the limiting groove.

[0007] As a further embodiment of this utility model: the left slide rail assembly includes a left slide rail seat fixed in a limiting groove, a left sliding adjustment groove is provided on the side of the left slide rail seat, a left screw is rotatably installed in the left sliding adjustment groove, a left slider is screwed onto the left screw, the left slider slides in the left sliding adjustment groove, a left movable chuck is fixedly installed on the left slider, a left driven toothed pulley is installed at the end of the left screw, and a left toothed belt is drivingly connected between the left driving toothed pulley and the left driven toothed pulley.

[0008] As a further embodiment of this utility model: the right slide rail assembly includes a right slide rail seat fixed in a limiting groove, a right sliding adjustment groove is provided on the side of the right slide rail seat, a right screw rod is rotatably installed in the right sliding adjustment groove, a right slider is screwed onto the right screw rod, the right slider slides in the right sliding adjustment groove, a right movable chuck is fixedly installed on the right slider, a right driven toothed pulley is installed at the end of the right screw rod, and a right toothed belt is connected between the right driving toothed pulley and the right driven toothed pulley.

[0009] As a further embodiment of this utility model: the left movable chuck includes a chuck seat that slides and engages with the upper end face of the base, and the lower end face of the chuck seat is formed with symmetrically arranged guide limiting blocks, and the guide limiting blocks slide and engage with the inner walls of the limiting groove on both sides. The upper end face of the chuck is provided with equidistant clamping tooth grooves.

[0010] As a further embodiment of this utility model: a left mounting plate and a right mounting plate are respectively fixed at the left and right ends of the base, the ends of the left motor component and the left slide rail assembly are fixed on the left mounting plate, and the ends of the right motor component and the right slide rail assembly are fixed on the right mounting plate.

[0011] As a further embodiment of this utility model: two left slide rail assemblies are symmetrically arranged on both sides of the left motor component. The right slide rail assembly has two symmetrically arranged on both sides of the right motor component.

[0012] As a further embodiment of this utility model: a left sliding limit block is formed on the left sliding component, which slides and engages in the left sliding adjustment groove; sliding guide blocks are formed on both sides of the left sliding limit block; sliding guide grooves are opened on both sides of the left sliding adjustment groove; and the sliding guide blocks slide and engage in the sliding guide grooves.

[0013] As a further embodiment of this utility model: the left motor component and the left slide rail base are respectively provided with a plurality of motor mounting holes and slide rail mounting holes at equal intervals; The motor mounting hole and the slide rail mounting hole are arranged in the same line.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model vise positioning device achieves automatic workpiece clamping and adjustment through a limiting groove on the base and symmetrically arranged left and right movable chucks, combined with independently driven left and right positioning components within the limiting groove. The left and right positioning components are driven by motor components to drive the active toothed belt pulley component, which in turn drives the driven toothed belt pulley component. The movable chuck is controlled to slide within the limiting groove through the slide rail component, thereby adapting to the rapid positioning and clamping of workpieces of different sizes. This avoids the manual operation burden and low efficiency of manual vises, and overcomes the defects of pneumatic or hydraulic vises that require external auxiliary equipment and have inconvenient clamping force adjustment. It has the effects of automated operation and easy maintenance.

[0015] In terms of system integration and maintenance costs, the device adopts a fully electric design. Compared with pneumatic or hydraulic vises, it does not require additional auxiliary equipment such as air compressors, hydraulic stations, complex pipelines and valves, which simplifies the overall structure of the machine tool, reduces purchase and installation costs, and avoids the noise and leakage of pneumatic systems and the oil pollution and maintenance problems of hydraulic systems, making the entire system easy to maintain. In terms of structural rigidity and stability, the motor and slide rail assembly are directly fixed in the limiting groove of the base, forming a stable rigid support structure, which ensures the stability of clamping and the safety of the processing. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural view of the present invention; Figure 2 This is another three-dimensional view of the structure of this utility model; Figure 3 This is a three-dimensional structural view of the left movable chuck, right movable chuck, and base in this utility model; Figure 4 This is a three-dimensional structural view of the left positioning component and the right positioning component in this utility model; Figure 5This is another three-dimensional view of the left positioning component and the right positioning component in this utility model; Figure 6 This is a three-dimensional structural view of the left slide rail assembly and the right slide rail assembly in this utility model; Figure 7 This is a three-dimensional structural view of the left sliding component in this utility model; The reference numerals and names in the figure are as follows: Base-101, Limiting groove-102, Left movable chuck-103, Right movable chuck-104, Left positioning assembly-105, Right positioning assembly-106, Left motor component-107, Left slide rail assembly-108, Left driving toothed belt pulley component-110, Left driven toothed belt pulley component-111, Right motor component-112, Right slide rail assembly-113, Right driving toothed belt pulley component-114, Right driven toothed belt pulley component-115, Left slide rail seat-116, Left sliding adjustment groove-117, Left screw Component-118, Left slider component-119, Left toothed belt-120, Right slide rail seat-121, Right sliding adjustment groove-122, Right screw component-123, Right slider component-124, Right toothed belt-125, Chuck seat-126, Guide limit block-127, Clamping tooth groove-128, Left mounting plate-129, Right mounting plate-130, Left sliding limit block-131, Sliding guide block-132, Sliding guide groove-133, Motor mounting hole-134, Slide rail mounting hole-135. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figure 1-7 A vise positioning device for CNC machine tools includes a base 101, on which a limiting groove 102 extending from front to back is provided. Left and right movable chucks 104 are symmetrically arranged above the limiting groove 102. Left and right positioning components 106 are symmetrically installed in the limiting groove 102. The left and right positioning components 106 respectively drive the left and right movable chucks 104 to slide and engage in the limiting groove 102. First, the electric control of the movable chuck is realized through the independent drive of the toothed pulley system of the left and right motor components 112, which replaces the laborious operation of the manual vise that relies on manual operation of the handle, reduces the labor intensity of the operator, and achieves rapid response, improving the efficiency of workpiece clamping and loosening. It is suitable for frequent and rapid production changeover operations in automated production lines. The left positioning component 105 includes a left motor component 107 and a left slide rail component 108 installed in the limiting groove 102. The left motor component 107 and the left slide rail component 108 are fixed in the limiting groove 102. A left active toothed pulley component 110 is installed on the output shaft of the left motor component 107, and a left driven toothed pulley component 111 is installed on the left slide rail component 108. The left active toothed pulley component 110 drives the left driven toothed pulley component 111. The left slide rail component 108 is fixedly connected to the left movable chuck 103 and drives the left movable chuck 103 to slide and adjust within the limiting groove 102. The right positioning component 106 includes a right motor component 112 and a right slide rail component 113 installed in the limiting groove 102. The right motor component 112 and the right slide rail component 113 are fixed in the limiting groove 102. A right active toothed pulley component 114 is installed on the output shaft of the right motor component 112. A right driven toothed pulley component 115 is installed on the right slide rail component 113. The right active toothed pulley component 114 drives the right driven toothed pulley component 115. The right slide rail component 113 is fixedly connected to the right movable chuck 104 and drives the right movable chuck 104 to slide and adjust within the limiting groove 102. Secondly, in terms of clamping accuracy and flexibility, since the left and right positioning components 106 are independent and symmetrically arranged, the device can clamp the workpiece from both sides, either centered or non-centered. This not only ensures the balanced distribution of clamping force and avoids the workpiece shifting during the clamping process, but also flexibly adapts to workpieces of different shapes and sizes. The sliding adjustment based on motor control is more reliable than manual judgment, effectively improving the processing positioning accuracy. Third, in terms of system integration and maintenance costs, the device adopts a fully electric design. Compared with pneumatic or hydraulic vises, it does not require additional auxiliary equipment such as air compressors, hydraulic stations, complex pipelines and valves, which simplifies the overall structure of the machine tool, reduces purchase and installation costs, and avoids the noise and leakage of pneumatic systems and the oil pollution and maintenance problems of hydraulic systems, making the entire system easy to maintain. In terms of structural rigidity and stability, the motor and slide rail assembly are directly fixed in the limiting groove 102 of the base 101, forming a stable rigid support structure, which ensures the stability of clamping and the safety of the processing. This utility model vise positioning device uses a limiting groove 102 on the base 101 and symmetrically arranged left and right movable chucks 104, combined with independently driven left and right positioning components 106 within the limiting groove 102, to achieve automatic clamping and adjustment of the workpiece. The left and right positioning components 106 are driven by motor components to drive the active toothed belt pulley component and drive the driven toothed belt pulley component, and then controlled by the slide rail component to slide the movable chuck within the limiting groove 102, thereby adapting to the rapid positioning and clamping of workpieces of different sizes. It avoids the manual operation burden and low efficiency of manual vises, and overcomes the defects of pneumatic or hydraulic vises that require external auxiliary equipment and have inconvenient clamping force adjustment. It has the effects of automated operation and easy maintenance.

[0019] In this embodiment of the present invention, the left slide rail assembly 108 includes a left slide rail seat 116 fixed in the limiting groove 102. A left sliding adjustment groove 117 is provided on the side of the left slide rail seat 116. A left screw rod 118 is rotatably installed in the left sliding adjustment groove 117. A left slider 119 is screwed onto the left screw rod 118. The left slider 119 slides within the left sliding adjustment groove 117. A left movable chuck 103 is fixedly installed on the left slider 119. A left driven toothed pulley 111 is installed at the end of the left screw rod 118. A left toothed belt 120 is connected between the left driving toothed pulley 110 and the left driven toothed pulley 111. The left motor component 107 transmits power to the left driven toothed pulley component 111 through the left toothed belt 120, thereby driving the left screw component 118 to rotate in the sliding adjustment groove of the left slide rail seat 116, which in turn forces the left slider component 119, which is screwed to it, to convert the rotational motion of the motor into linear motion and drive the left movable chuck 103 to move. Combining the smoothness of belt drive and the high precision of screw drive, it not only achieves high-precision and high-rigidity positioning of the movable chuck, but also the self-locking characteristic of the screw drive mechanism itself can reliably maintain the clamping force when the power is off, effectively preventing the workpiece from loosening during processing. At the same time, the overall structure is compact, rigid, and runs smoothly.

[0020] In this embodiment of the present invention, the right slide rail assembly 113 includes a right slide rail seat 121 fixed in the limiting groove 102. A right sliding adjustment groove 122 is provided on the side of the right slide rail seat 121. A right screw rod 123 is rotatably installed in the right sliding adjustment groove 122. A right slider 124 is screwed onto the right screw rod 123. The right slider 124 slides within the right sliding adjustment groove 122. A right movable chuck 104 is fixedly installed on the right slider 124. A right driven toothed belt pulley 115 is installed at the end of the right screw rod 123. A right toothed belt 125 is connected between the right driving toothed belt pulley 114 and the right driven toothed belt pulley 115. The right motor component 112 transmits power to the right driven toothed pulley component 115 via the right toothed belt 125, thereby driving the right screw component 123 to rotate in the sliding adjustment groove of the right slide rail seat 121. This rotational motion is converted into linear motion by the screwed right slider component 124, and finally drives the right movable chuck 104 fixed thereon to adjust its displacement. High-precision and high-rigidity positioning is achieved by means of screw drive. Its self-locking characteristic ensures the reliable maintenance of clamping force during clamping and when power is off, effectively preventing the workpiece from loosening. At the same time, the toothed belt drive is smooth and has low noise, so that the entire right positioning component 106 works in coordination with the left component to achieve fast, stable and accurate bidirectional synchronous or asynchronous clamping of the workpiece.

[0021] In this embodiment of the utility model, the left movable chuck 103 includes a chuck seat 126 that is slidably fitted on the upper end face of the base 101. The lower end face of the chuck seat 126 is formed with symmetrically arranged guide limiting blocks 127. The guide limiting blocks 127 are slidably abutted against the inner walls of the limiting groove 102. The upper end face of the chuck seat 126 is provided with clamping tooth grooves 128 at equal intervals; The chuck 126 achieves displacement by sliding on the upper end face of the base 101. At the same time, the guide limiting blocks 127 formed and symmetrically arranged on the lower end face of the chuck 126 always maintain sliding contact with the left and right inner walls of the limiting groove 102. The guide limiting blocks 127 constitute an effective anti-sway structure, which enhances the straightness and stability of the chuck 126 during operation and effectively prevents jamming and shaking. Meanwhile, the clamping tooth grooves 128 equidistantly opened on the upper end face of the chuck 126 can significantly increase the contact friction with the workpiece and prevent the workpiece from sliding during processing.

[0022] In this embodiment of the utility model, the left and right ends of the base 101 are respectively fixed with a left mounting plate 129 and a right mounting plate 130, the ends of the left motor component 107 and the left slide rail assembly 108 are fixed on the left mounting plate 129, and the ends of the right motor component 112 and the right slide rail assembly 113 are fixed on the right mounting plate 130. The left mounting plate 129 and right mounting plate 130 fixed at the left and right ends of the base 101 respectively provide a dedicated and robust mounting reference for the ends of the left and right motor components 112 and slide rail assemblies, rigidly connecting and integrating the drive and transmission units onto the main structure of the base 101; enhancing the structural rigidity and overall stability of the entire positioning device, effectively resisting vibrations and torques generated during clamping and processing, ensuring accurate and stable power transmission, and facilitating precise positioning, independent assembly, and subsequent maintenance of each component.

[0023] In this embodiment of the present invention, two left slide rail assemblies 108 are symmetrically arranged on both sides of the left motor component 107. Two right slide rail assemblies 113 are symmetrically arranged on both sides of the right motor component 112; By symmetrically setting two slide rail assemblies on both sides of the left and right motor components 112, a stable and reliable symmetrical force structure is constructed, so that the driving force output by the motor is synchronously transmitted to the screws on both sides through the toothed belt, driving the two sliders to move in coordination, thereby jointly supporting and smoothly driving the movable chuck to move, enhancing the rigidity and stability of the entire clamping mechanism, and effectively overcoming the problems of off-center load, jamming or chuck overturning that may occur with unilateral drive.

[0024] In this embodiment of the present invention, a left sliding limit block 131 is formed on the left sliding component 119 and slides within the left sliding adjustment groove 117. Sliding guide blocks 132 are formed on both sides of the left sliding limit block 131, and sliding guide grooves 133 are respectively provided on both sides of the left sliding adjustment groove 117. The sliding guide block 132 slides within the sliding guide groove 133. The left sliding limit block 131 formed on the left slider 119 and the sliding guide blocks 132 on both sides form a sliding fit with the corresponding sliding guide groove 133 in the left sliding adjustment groove 117. By increasing the contact area and setting multiple guide surfaces, the linear motion of the slider under the screw drive is constrained more stably. This enhances the slider's resistance to torsion and overturning during movement, effectively preventing jamming and crawling phenomena that may occur due to uneven force, and ensuring the smoothness and straightness of the movable chuck displacement.

[0025] In this embodiment of the utility model, the left motor component 107 and the left slide rail seat 116 are respectively provided with a plurality of motor mounting holes 134 and slide rail mounting holes 135 at equal intervals. The motor mounting hole 134 and the slide rail mounting hole 135 are arranged in the same line; Multiple motor mounting holes 134 and slide rail mounting holes 135 are equidistantly opened on the left motor component 107 and the left slide rail base 116, and are arranged collinearly, providing multiple selectable and position-corresponding mounting and fixing points for the motor component and the slide rail base. This improves the flexibility and precision of component installation, allows for fine-tuning of the optimal installation position according to actual needs, and ensures the uniformity of the installation benchmark by collinear arrangement, effectively avoiding cumulative assembly errors and simplifying the assembly process.

[0026] In one embodiment, a protective housing is provided on the outer side of the base 101. The protective housing has a pre-set sliding groove for the left and right movable chucks 104 to slide. The protective housing is used to stop and protect the iron chips during the machine tool processing. The structure of the protective housing is a common technology in this field and will not be described in detail here.

[0027] In one embodiment, the vise positioning device of this invention is suitable for precision machining environments.

[0028] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A vise positioning device for CNC machine tools, characterized in that, Includes a base (101), on which a limiting groove (102) is provided that extends from front to back. Left and right movable clamps (104) are symmetrically arranged above the limiting groove (102). Left and right positioning components (106) are symmetrically installed in the limiting groove (102). The left and right positioning components (106) respectively drive the left and right movable clamps (104) to slide and cooperate in the limiting groove (102). The left positioning component (105) includes a left motor component (107) and a left slide rail component (108) installed in the limiting groove (102). The left motor component (107) and the left slide rail component (108) are fixed in the limiting groove (102). A left active toothed pulley component (110) is installed on the output shaft of the left motor component (107), and a left driven toothed pulley component (111) is installed on the left slide rail component (108). The left active toothed pulley component (110) drives the left driven toothed pulley component (111). The left slide rail component (108) is fixedly connected to the left movable chuck (103) and drives the left movable chuck (103) to slide and adjust in the limiting groove (102). The right positioning component (106) includes a right motor component (112) and a right slide rail component (113) installed in the limiting groove (102). The right motor component (112) and the right slide rail component (113) are fixed in the limiting groove (102). A right active toothed pulley component (114) is installed on the output shaft of the right motor component (112), and a right driven toothed pulley component (115) is installed on the right slide rail component (113). The right active toothed pulley component (114) drives the right driven toothed pulley component (115). The right slide rail component (113) is fixedly connected to the right movable chuck (104) and drives the right movable chuck (104) to slide and adjust in the limiting groove (102).

2. The vise positioning device for CNC machine tools according to claim 1, characterized in that, The left slide rail assembly (108) includes a left slide rail seat (116) fixed in a limiting groove (102). A left sliding adjustment groove (117) is provided on the side of the left slide rail seat (116). A left screw rod (118) is rotatably installed in the left sliding adjustment groove (117). A left slider (119) is screwed onto the left screw rod (118). The left slider (119) slides in the left sliding adjustment groove (117). A left movable chuck (103) is fixedly installed on the left slider (119). A left driven toothed pulley (111) is installed at the end of the left screw rod (118). A left toothed belt (120) is connected between the left driving toothed pulley (110) and the left driven toothed pulley (111).

3. The vise positioning device for CNC machine tools according to claim 1, characterized in that, The right slide rail assembly (113) includes a right slide rail seat (121) fixed in a limiting groove (102). A right sliding adjustment groove (122) is provided on the side of the right slide rail seat (121). A right screw rod (123) is rotatably installed in the right sliding adjustment groove (122). A right slider (124) is screwed onto the right screw rod (123). The right slider (124) slides in the right sliding adjustment groove (122). A right movable chuck (104) is fixedly installed on the right slider (124). A right driven toothed pulley (115) is installed at the end of the right screw rod (123). A right toothed belt (125) is connected between the right driving toothed pulley (114) and the right driven toothed pulley (115).

4. A vise positioning device for CNC machine tools according to claim 1, characterized in that, The left movable chuck (103) includes a chuck seat (126) that slides on the upper end face of the base (101). The lower end face of the chuck seat (126) is formed with symmetrically arranged guide limiting blocks (127). The guide limiting blocks (127) slide and abut against the inner walls of the limiting groove (102). The upper end face of the chuck (126) is provided with clamping tooth grooves (128) at equal intervals.

5. A vise positioning device for CNC machine tools according to claim 1, characterized in that, The left and right ends of the base (101) are respectively fixed with a left mounting plate (129) and a right mounting plate (130). The ends of the left motor component (107) and the left slide rail assembly (108) are fixed on the left mounting plate (129), and the ends of the right motor component (112) and the right slide rail assembly (113) are fixed on the right mounting plate (130).

6. A vise positioning device for CNC machine tools according to claim 1, characterized in that, Two left slide rail assemblies (108) are symmetrically arranged on both sides of the left motor component (107). Two right slide rail assemblies (113) are symmetrically arranged on both sides of the right motor component (112).

7. A vise positioning device for CNC machine tools according to claim 2, characterized in that, The left sliding component (119) has a left sliding limit block (131) formed on it, which slides and engages in the left sliding adjustment groove (117). Sliding guide blocks (132) are formed on both sides of the left sliding limit block (131). Sliding guide grooves (133) are opened on both sides of the left sliding adjustment groove (117). The sliding guide block (132) slides and engages in the sliding guide groove (133).

8. A vise positioning device for CNC machine tools according to claim 2, characterized in that, The left motor component (107) and the left slide rail base (116) are respectively provided with multiple motor mounting holes (134) and slide rail mounting holes (135) at equal intervals. The motor mounting hole (134) and the slide rail mounting hole (135) are arranged in the same line.

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