Wire cutting machine for cutting cylindrical bar

Abstract

A wire cutting machine for cutting off cylindrical bars comprises a machine body, a machine base, a material supporting workbench, a material supporting workbench horizontal moving device, a cutting wire winding system, a cutting wire lifting feeding device and a control system. A cutting wire winding system, a cutting wire lifting and feeding device and a control system are arranged on the machine body; a material supporting workbench sliding rail is arranged on the machine base, and the material supporting workbench is assembled with the material supporting workbench sliding rail on the machine base. The material supporting workbench horizontal moving device is installed on the machine base. The material supporting workbench comprises a workpiece clamping device and a workbench body, a workpiece clamping device moving track is arranged on the workbench body, and the workpiece clamping device comprises a plurality of workpiece clamping units. By means of the optimized design of the workpiece clamping device and the cutting wire winding system, cutting operation of cylindrical bar workpieces with different lengths and sizes is achieved, and the purposes of improving work efficiency and reducing production cost are achieved.

Description

Technical Field

[0001] This utility model relates to the technical field of diamond wire cutting machine equipment, specifically a wire cutting machine for cutting cylindrical bars. Background Technology

[0002] The cutting principle of a diamond wire EDM machine is as follows: High-speed rotating and reciprocating take-up and unload reels drive the diamond wire in a reciprocating motion. Guided by the guide wheel and with tension controlled by the tension wheel, the diamond wire creates a relative grinding motion between itself and the material being cut within a designated cutting section, thus achieving the cutting purpose. Currently, diamond wire EDM machines are widely used for cutting various metal and non-metal composite materials, and are particularly suitable for cutting high-hardness, easily breakable crystalline materials.

[0003] Diamond wire EDM machines include multi-wire EDM machines and single-wire EDM machines. Multi-wire EDM machines are used for simultaneous multi-blade cutting of workpieces, while single-wire EDM machines are typically used for squaring raw materials. (See attached image) Figure 1 As shown, when the raw material to be cut is a cylindrical bar 1, especially when the cylindrical bar 1 is cut into several segments of different lengths (e.g., when the cylindrical bar is cut into segments A, B, C, D, E, etc.), not only is it difficult to solve the problem of workpiece positioning and clamping, but also, because the distance between each cutting surface and the positioning reference surface is different, a corresponding cutting wire winding system needs to be configured, which reduces work efficiency and increases production costs. Utility Model Content

[0004] This utility model provides a wire cutting machine for cutting cylindrical bars. It aims to improve work efficiency and reduce production costs by optimizing the design of the workpiece clamping device and the cutting wire winding system to achieve cutting operations of cylindrical bar workpieces of different lengths.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A wire cutting machine for cutting cylindrical bars includes a machine body, a base, a material support table, a horizontal moving device for the material support table, a wire winding system, a wire lifting and feeding device, and a control system. The machine body is mounted on the base, and the wire winding system, the wire lifting and feeding device, and the control system are arranged on the machine body. The base is fixed on a horizontal ground, and a material support table slide rail and a horizontal moving device for the material support table are provided on the base. The material support table is fitted with the material support table slide rail on the base, and is driven by the horizontal moving device to switch between the workpiece loading area and the workpiece cutting area.

[0007] The material handling workbench includes a workpiece clamping device and a workbench body. A workpiece clamping device moving track is provided on the workbench body. The workpiece clamping device includes several workpiece clamping units. Each workpiece clamping unit is provided with a clamping mechanism, a driving mechanism, a locking mechanism, and a workpiece clamping unit moving seat. The workpiece clamping unit moving seat is fitted with the workpiece clamping device moving track on the workbench body. The driving mechanism and the locking mechanism are installed between the workpiece clamping unit moving seat and the workbench body. The clamping mechanism is installed on the workpiece clamping unit moving seat.

[0008] The wire cutting machine for cutting cylindrical bars described above includes a clamping mechanism comprising jaws, a jaw assembly base, and a jaw cylinder. The jaw assembly base is installed in the middle of the workpiece clamping unit moving base. The jaws and jaw cylinder are composed of two parts symmetrically arranged on the left and right sides of the jaw assembly base. In each part, the jaw cylinder is fixed on the workpiece clamping unit moving base and is arranged vertically with its extension rod extending upward. One end of the jaw is hinged to the jaw assembly base, and the other end is hinged to the extension rod of the jaw cylinder. The left and right jaws are arranged in a V-shape.

[0009] The wire cutting machine for cutting cylindrical bars described above has two sets of jaws and jaw cylinders arranged on the left and right sides of the jaw assembly base in the front-back direction, and a support bar is provided on the clamping working surface of each set of jaws.

[0010] The aforementioned wire cutting machine for cutting cylindrical bars includes a drive mechanism comprising a motor and a gear and rack transmission assembly. The motor is mounted on a movable seat of the workpiece clamping unit, and the motor output shaft is fitted with the gear and rack transmission assembly. The gear and rack transmission assembly includes a drive gear, a transition gear, and a rack. The rack is fixed on the worktable body, the drive gear is fastened to the motor output shaft, the drive gear meshes with the transition gear, and the transition gear meshes with the rack to form a transmission pair.

[0011] The aforementioned wire cutting machine for cutting cylindrical bars includes a locking mechanism comprising two symmetrically arranged parts. Each part is equipped with a locking cylinder, a locking block, and a locking slide rail. The locking cylinder is mounted on the workpiece clamping unit's moving seat and is arranged vertically. Its telescopic rod extends downwards, and a locking block is fitted at the end of the telescopic rod. The locking slide rail is fixed to the worktable body and has a locking groove that matches the locking block.

[0012] The wire cutting machine for cutting cylindrical bars described above also includes a workpiece position adjustment mechanism in the workpiece clamping unit. The workpiece position adjustment mechanism is arranged in the clamping mechanism and includes two symmetrically arranged parts, located between two sets of jaws arranged along the front-back direction on the left and right sides of the jaw assembly seat. The workpiece position adjustment mechanism includes rollers and roller support seats. One end of the roller is hinged to the roller support seat, and the other end is hinged to the jaw assembly seat in the clamping mechanism. The two sets of rollers are arranged in a V-shape.

[0013] The aforementioned wire cutting machine for cutting cylindrical bars includes a wire winding system comprising a cutting wire, a feed wheel assembly, a guide wheel assembly, a take-up wheel assembly, and a cutting position adjustment mechanism. The cutting wire passes over the guide wheel assembly, with both ends wound around the feed wheel assembly and the take-up wheel assembly, respectively, to match single-wire cutting and double-wire cutting modes using two winding methods. The cutting position adjustment mechanism includes a movable guide wheel seat and a motor-driven screw and nut transmission assembly, which adjusts the forward and backward position of the cutting section of the cutting wire by moving the movable guide wheel seat forward and backward. The guide wheel assembly includes a tension wheel and several guide wheels. The tension wheel is mounted on the cutting wire lifting and feeding device, and the guide wheels are mounted on the movable guide wheel seat of the cutting wire lifting and feeding device and the cutting position adjustment mechanism.

[0014] The wire cutting machine for cutting cylindrical bars described above is further equipped with a machine body shell, a protective cover, and an operation panel; the machine body shell is fixedly assembled with the machine body and the machine base; the protective cover is arranged outside the motor-driven lead screw and nut assembly of the material support worktable horizontal moving device and the wire winding system; the operation panel is located on one side of the machine body shell and is connected to the control system of the wire cutting machine through a wire.

[0015] This utility model provides a wire cutting machine for cutting cylindrical bars. It uses several workpiece clamping units in the workpiece clamping device on the worktable to clamp and fix the cylindrical bar at different positions. The clamping mechanism mounted on the moving seat of the workpiece clamping unit is driven by the drive mechanism of the workpiece clamping unit to move horizontally, allowing the workpiece clamping unit to avoid the cutting position of the workpiece. This utility model features V-shaped jaws in the workpiece clamping units of the worktable. The clamping force of the jaw cylinder can be set to ensure the clamping force on the cylindrical bar, preventing displacement after cutting and effectively avoiding chipping of the cut surface. The workpiece clamping unit also includes a workpiece position adjustment mechanism to adjust the position of the bar if its front or rear position is unsuitable. This invention can match single-wire cutting and double-wire cutting modes through two winding methods. In double-wire cutting mode, two cutting operations at different positions are completed simultaneously. The front and rear positions of the second horizontal cutting section of the cutting line can be adjusted through the cutting position adjustment mechanism, thereby completing the cutting of workpieces of different lengths. To match the structure of the material support table and its horizontal moving device, this invention uses a workpiece-fixed, cutting line-lifting feed device to move the cutting line downwards to complete the cutting process. In summary, this invention, through the above technical means, achieves the cutting of cylindrical bar workpieces of different lengths, thereby improving work efficiency and reducing production costs. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a cylindrical bar workpiece;

[0017] Figure 2 This is a schematic diagram of the main structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the machine base, the material support worktable, and the horizontal moving device of the material support worktable.

[0019] Figure 4 This is a schematic diagram of a workpiece clamping unit on the material handling workbench (to clearly show each component, the obstructing part of the workpiece clamping unit's moving seat has been removed from the diagram).

[0020] Figure 5 This is a schematic diagram of the clamping mechanism in the workpiece clamping unit;

[0021] Figure 6 This is a schematic diagram showing the cooperation between the clamping mechanism and the cylindrical bar workpiece in the workpiece clamping unit;

[0022] Figure 7 This is a schematic diagram of the workpiece position adjustment mechanism in the workpiece clamping unit;

[0023] Figure 8This is a schematic diagram showing the cooperation between the workpiece position adjustment mechanism and the cylindrical bar workpiece in the workpiece clamping unit;

[0024] Figure 9 This is a schematic diagram of the wire cutting and winding system.

[0025] Figure 10 yes Figure 9 Schematic diagrams of the winding system with a cutting wire viewed from different angles;

[0026] Figure 11 This is a schematic diagram of the wire winding structure in the double-wire cutting mode;

[0027] Figure 12 This is a schematic diagram of the wire winding structure in single-wire cutting mode;

[0028] Figure 13 This is a schematic diagram of the overall appearance and structure of this utility model.

[0029] Explanation of each label in the diagram:

[0030] 1 is a cylindrical bar;

[0031] 2 refers to the body;

[0032] 3 is the machine base, and 3-1 is the material support table slide rail;

[0033] 4 is the material handling workbench

[0034] 4-1 is the workpiece clamping device.

[0035] 4-1-1 is the clamping mechanism, 4-1-1-1 is the gripper, 4-1-1-2 is the gripper cylinder, and 4-1-1-3 is the support bar;

[0036] 4-1-2 is the drive mechanism, 4-1-2-1 is the motor, 4-1-2-2 is the drive gear, 4-1-2-3 is the transition gear, and 4-1-2-3 is the rack;

[0037] 4-1-3 is the locking mechanism, 4-1-3-1 is the locking cylinder, 4-1-3-2 is the locking block, and 4-1-3-3 is the locking slide rail;

[0038] 4-1-4 is the moving seat of the workpiece clamping unit;

[0039] 4-1-5 is the workpiece position adjustment mechanism, 4-1-5-1 is the roller, and 4-1-5-2 is the roller support base;

[0040] 4-2 is the worktable body.

[0041] 4-2-1 is the moving track of the workpiece clamping device;

[0042] 5 is the horizontal moving device for the material handling table;

[0043] 6 is a wire cutting and winding system

[0044] 6-1 is the cutting line, 6-2 is the feed roller assembly, 6-3 is the guide roller, 6-4 is the tension roller, 6-5 is the movable guide roller seat, 6-6 is the motor-driven lead screw and nut assembly, and 6-7 is the take-up roller assembly;

[0045] 7 is the cutting line lifting and feeding device;

[0046] 8 represents the outer casing of the machine;

[0047] 9 is the operation panel;

[0048] 10 is a protective shield. Detailed Implementation

[0049] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0050] Referring to Figure 1, a cylindrical rod 1 made of high-hardness, easily breakable single-crystal silicon or quartz needs to be cut into different lengths, such as A, B, C, D, E, etc. Due to the difficulty in solving the workpiece positioning and clamping problem, and the different distances between each cutting surface and the positioning reference surface, a corresponding cutting wire winding system needs to be configured, which leads to low work efficiency and high production costs.

[0051] See Figure 2 , Figure 3 To improve the efficiency and reduce production costs of cutting cylindrical bars of different lengths, this utility model provides a wire cutting machine for cutting cylindrical bars, including a machine body 2, a base 3, a material support table 4, a horizontal moving device for the material support table 5, a wire winding system 6, a wire lifting and feeding device 7, and a control system. The machine body 2 is mounted on the base 3, and the wire winding system 6, the wire lifting and feeding device 7, and the control system are arranged on the machine body 2. The base 3 is fixed on a horizontal ground, and a material support table slide rail 3-1 and a horizontal moving device for the material support table 5 are provided on the base 3. The material support table 4 is fitted with the material support table slide rail 3-1 on the base 3. The horizontal moving device for the material support table 5 adopts a motor-driven screw and nut transmission method to push the material support table 4 to move horizontally along the material support table slide rail 3-1 on the base 3, so that it switches between the workpiece loading area and the workpiece cutting area.

[0052] See Figure 3The wire cutting machine for cutting cylindrical bars according to the present invention has a material support worktable 4 including a workpiece clamping device 4-1 and a worktable body 4-2. A workpiece clamping device moving track 4-2-1 is provided on the worktable body 4-2. The workpiece clamping device 4-1 includes several workpiece clamping units.

[0053] See Figure 3 , Figure 4 The wire cutting machine for cutting cylindrical bars according to this utility model is provided with a clamping mechanism 4-1-1, a driving mechanism 4-1-2, a locking mechanism 4-1-3, and a workpiece clamping unit moving seat 4-1-4 in each workpiece clamping unit of the workpiece clamping device 4-1. The workpiece clamping unit moving seat 4-1-4 is fitted with the workpiece clamping device moving track 4-2-1 on the worktable body 4-2. The driving mechanism 4-1-2 and the locking mechanism 4-1-3 are installed between the workpiece clamping unit moving seat 4-1-4 and the worktable body 4-2. The clamping mechanism 4-1-1 is installed on top of the workpiece clamping unit moving seat 4-2.

[0054] See Figure 3 , Figure 4 , Figure 5 , Figure 6 The wire cutting machine for cutting cylindrical bars according to this utility model, in each workpiece clamping unit of the workpiece clamping device 4-1, the clamping mechanism 4-1-1 includes a jaw 4-1-1-1, a jaw assembly seat 4-1-1-4, and a jaw cylinder 4-1-1-2; the jaw assembly seat 4-1-1-4 is installed in the middle part of the workpiece clamping unit moving seat 4-1-4, and the jaw 4-1-1-1 and the jaw cylinder 4-1-1-2 are composed of two parts symmetrically arranged on the left and right sides of the jaw assembly seat 4-1-1-4; in each part Two sets of grippers 4-1-1-1 and gripper cylinders 4-1-1-2 are arranged along the front-to-back direction. Support bars 4-1-1-3 are provided on the clamping working surface of each set of grippers 4-1-1-1. The gripper cylinders 4-1-1-2 are fixed to the workpiece clamping unit moving seat 4-1-4 in a vertical arrangement, with their telescopic rods extending upwards. One end of the gripper 4-1-1-1 is hinged to the gripper mounting seat 4-1-1-4, and the other end is hinged to the telescopic rod of the gripper cylinder 4-1-1-2. The left and right grippers 4-1-1-1 are arranged in a V-shape. In designing the clamping mechanism 4-1-1 of this utility model, the clamping force on the cylindrical bar 1 can be ensured by setting the thrust of the gripper cylinders 4-1-1-2, preventing displacement of the cylindrical bar 1 after cutting, thereby effectively avoiding the problem of chipping at the cut surface of the workpiece.

[0055] See Figure 4The wire cutting machine for cutting cylindrical bars according to this utility model has a drive mechanism 4-1-2 in each workpiece clamping unit of the workpiece clamping device 4-1, which is equipped with a motor 4-1-2-1 and a gear and rack transmission assembly. The motor 4-1-2-1 drives the workpiece clamping unit moving seat 4-1-4 to move back and forth through the gear and rack transmission assembly. The motor 4-1-2-1 is mounted on the workpiece clamping unit moving seat 4-1-4, and the motor output shaft is fitted with the gear and rack transmission assembly. The gear and rack transmission assembly includes a drive gear 4-1-2-2, a transition gear 4-1-2-3, and a rack 4-1-2-4. The rack 4-1-2-4 is fixed on the worktable body 4-2. The drive gear 4-1-2-2 is fastened to the motor output shaft. The drive gear 4-1-2-2 meshes with the transition gear 4-1-2-3. The transition gear 4-1-2-3 meshes with the rack 4-1-2-4 to form a transmission pair. In each workpiece clamping unit of the workpiece clamping device 4-1 of this utility model, after the workpiece clamping unit moving seat 4-1-4 is adjusted to the set position, it can be locked and fixed by the locking mechanism 4-1-3. The locking mechanism 4-1-3 includes two parts arranged symmetrically on the left and right. In each part, a locking cylinder 4-1-3-1, a locking block 4-1-3-2 and a locking slide rail 4-1-3-3 are respectively provided. The locking cylinder 4-1-3-1 is installed on the workpiece clamping unit moving seat 4-1-4 and is arranged vertically. Its telescopic rod extends downward and the locking block 4-1-3-2 is fitted at the end of the telescopic rod. The locking slide rail 4-1-3-3 is fixed on the worktable body 4-2 and has a locking groove that matches the locking block 4-1-3-2. When adjusting the front and rear positions of the workpiece clamping unit moving seat 4-1-4, the telescopic rod of the locking cylinder 4-1-3-1 is in the extended state, and the locking block 4-1-3-2 moves back and forth in the locking groove of the locking slide rail 4-1-3-3. When the workpiece clamping unit moving seat 4-1-4 is adjusted to the correct position, the telescopic rod of the locking cylinder 4-1-3-1 retracts, locking the locking block 4-1-3-2 in the locking groove of the locking slide rail 4-1-3-3, thereby locking and fixing the workpiece clamping unit moving seat 4-1-4.

[0056] See Figure 3 , Figure 4 , Figure 7 , Figure 8The wire cutting machine for cutting cylindrical bars described in this utility model is further provided with a workpiece position adjustment mechanism 4-1-5 in each workpiece clamping unit of the workpiece clamping device 4-1. The workpiece position adjustment mechanism 4-1-5 can be used to adjust the position of the bar that is not in a suitable position. The workpiece position adjustment mechanism 4-1-5 is arranged in the clamping mechanism 4-1-1 and includes two parts arranged symmetrically on the left and right sides, located between two sets of jaws 4-1-1-1 arranged along the front and back directions on the left and right sides of the jaw assembly seat 4-1-1-4. The workpiece position adjustment mechanism 4-1-5 is provided with rollers 4-1-5-1 and roller support seats 4-1-5-2. One end of the rollers 4-1-5-1 is hinged to the roller support seat 4-1-5-2, and the other end is hinged to the jaw assembly seat 4-1-1-4 in the clamping mechanism. The two sets of rollers 4-1-5-1 are arranged in a V-shape.

[0057] See Figure 2 , Figure 9 , Figure 10 The wire cutting machine for cutting cylindrical bars according to this utility model has a wire winding system 6 comprising a cutting wire 6-1, a feed wheel assembly 6-2, a guide wheel assembly, a take-up wheel assembly 6-7, and a cutting position adjustment mechanism. The cutting wire 6-1 passes around the guide wheel assembly, and its two ends are respectively wound on the wire wheels of the feed wheel assembly 6-1 and the take-up wheel assembly 6-7, matching single-wire cutting and double-wire cutting modes with two winding methods respectively. The cutting position adjustment mechanism includes a movable guide wheel seat 6-5 and a motor-driven screw and nut transmission assembly 6-6, and the forward and backward movement of the movable guide wheel seat 6-5 realizes the forward and backward position adjustment of the cutting section of the cutting wire. The guide wheel assembly includes a tension wheel 6-4 and several guide wheels 6-3. The tension wheel 6-4 is mounted on the cutting wire lifting and feeding device 7, and the guide wheels 6-3 are mounted on the movable guide wheel seat 6-5 of the cutting wire lifting and feeding device 7 and the cutting position adjustment mechanism.

[0058] See Figure 10 , Figure 11 The wire cutting machine for cutting cylindrical bars described in this utility model, when using the single-wire cutting mode, the cutting wire 6-1 bypasses the guide wheel 6-3 and tension wheel 6-4 installed on the cutting wire lifting and feeding device 7, and forms a first horizontal cutting section I between the two sets of guide wheels arranged at the bottom of the cutting wire lifting and feeding device 7.

[0059] See Figure 10 , Figure 12The wire cutting machine for cutting cylindrical bars described in this utility model, in the dual-wire cutting mode, the cutting wire 6-1 bypasses the guide wheel 6-3 and tension wheel 6-4 installed on the cutting wire lifting and feeding device 7, and the guide wheel 6-3 installed on the movable guide wheel seat 6-5 of the cutting position adjustment mechanism. A first horizontal cutting section I is formed between the two sets of guide wheels arranged at the bottom of the cutting wire lifting and feeding device 7, and a second horizontal cutting section II is formed between the two sets of guide wheels arranged at the bottom of the cutting position adjustment mechanism.

[0060] See Figure 13 The wire cutting machine for cutting cylindrical bars according to this utility model is further provided with a machine body shell 8, a protective cover 10 and an operation panel 9; the machine body shell 8 is fixedly assembled with the machine body 2 and the machine base 3; the protective cover 10 is arranged outside the motor-driven lead screw nut assembly 6-6 in the horizontal moving device 5 of the material support worktable and the wire winding system 6; the operation panel 9 is located on one side of the machine body shell 8 and is connected to the control system of the wire cutting machine through a wire.

[0061] See Figures 1 to 13 When using this utility model to cut cylindrical bar 1, single-wire cutting or double-wire cutting modes can be adopted. When using double-wire cutting mode, the following steps are followed: First, according to the length of cylindrical bar 1 and the cutting position, adjust the position of each workpiece clamping unit arranged on the material support worktable 4, and then lock and fix them through the locking mechanism; open the jaws 4-1-1-1 of the clamping mechanism 4-1-1 in each workpiece clamping unit, and place the cylindrical bar 1 to be cut on the material support worktable 4; adjust the front of the cylindrical bar 1 to be cut through the rollers 4-1-5-1 in the workpiece position adjustment mechanism 4-1-5. The position is adjusted to ensure that the cutting position of the cylindrical bar 1 does not interfere with the workpiece clamping unit, and the first cutting position (reference cutting surface) is aligned with the first horizontal cutting section I of the cutting line 6-1. The clamping cylinder 4-1-1-2 of the clamping mechanism 4-1-1 in each workpiece clamping unit actuates, causing the clamping jaws 4-1-1-1 to press firmly against the cylindrical bar 1. According to the set program, the material-supporting worktable 4 is driven to the set working area via the horizontal moving device 5. The wire cutting machine is started, and the first and second cutting positions are cut through the first horizontal cutting section I and the second horizontal cutting section II of the cutting line 6-1. When using single-wire wire cutting mode, the workpiece position can be adjusted via the workpiece position adjustment mechanism 4-1-5 to align the first horizontal cutting section I of the cutting line 6-1 with the cutting position to be cut.

Claims

1. A wire cutting machine for cutting cylindrical bars, comprising a machine body (2), a base (3), a material support table (4), a horizontal moving device for the material support table (5), a wire winding system (6), a wire lifting and feeding device (7), and a control system; the machine body (2) is mounted on the base (3), and the wire winding system (6), the wire lifting and feeding device (7), and the control system are arranged on the machine body (2); the base (3) is fixed on a horizontal ground, and a material support table slide rail (3-1) and a horizontal moving device for the material support table (5) are provided on the base (3); the material support table (4) is fitted with the material support table slide rail (3-1) on the base (3), and is driven by the horizontal moving device for the material support table (5) to switch between the workpiece loading area and the workpiece cutting area; characterized in that: The material handling workbench (4) includes a workpiece clamping device (4-1) and a workbench body (4-2). A workpiece clamping device moving track (4-2-1) is provided on the workbench body (4-2). The workpiece clamping device (4-1) includes several workpiece clamping units. Each workpiece clamping unit is provided with a clamping mechanism (4-1-1), a driving mechanism (4-1-2), a locking mechanism (4-1-3), and a workpiece clamping unit moving seat (4-1-4). The workpiece clamping unit moving seat (4-1-4) is fitted with the workpiece clamping device moving track (4-2-1) on the workbench body (4-2). The driving mechanism (4-1-2) and the locking mechanism (4-1-3) are installed between the workpiece clamping unit moving seat (4-1-4) and the workbench body (4-2). The clamping mechanism (4-1-1) is installed on the workpiece clamping unit moving seat (4-2).

2. The wire cutting machine for cutting cylindrical bars according to claim 1, characterized in that: The clamping mechanism (4-1-1) includes a jaw (4-1-1-1), a jaw assembly seat (4-1-1-4), and a jaw cylinder (4-1-1-2). The jaw assembly seat (4-1-1-4) is installed in the middle of the workpiece clamping unit moving seat (4-1-4). The jaw (4-1-1-1) and the jaw cylinder (4-1-1-2) are symmetrically arranged on the left and right sides of the jaw assembly seat (4-1-1-4). It consists of two parts; in each part, the gripper cylinder (4-1-1-2) is fixed on the workpiece clamping unit moving seat (4-1-4) and arranged vertically, with its telescopic rod extending upward. One end of the gripper (4-1-1-1) is hinged to the gripper assembly seat (4-1-1-4), and the other end is hinged to the telescopic rod of the gripper cylinder (4-1-1-2). The left and right grippers (4-1-1-1) are arranged in a V-shape.

3. The wire cutting machine for cutting cylindrical bars according to claim 2, characterized in that: On the left and right sides of the gripper assembly (4-1-1-4), two sets of grippers (4-1-1-1) and gripper cylinders (4-1-1-2) are arranged in the front and back direction. Support bars (4-1-1-3) are provided on the clamping working surface of each set of grippers (4-1-1-1).

4. The wire cutting machine for cutting cylindrical bars according to claim 2 or 3, characterized in that: The drive mechanism (4-1-2) is equipped with a motor (4-1-2-1) and a gear and rack transmission assembly. The motor (4-1-2-1) is mounted on the workpiece clamping unit moving seat (4-1-4), and the motor output shaft is fitted with the gear and rack transmission assembly. The gear and rack transmission assembly includes a drive gear (4-1-2-2), a transition gear (4-1-2-3), and a rack (4-1-2-4). The rack (4-1-2-4) is fixed on the worktable body (4-2). The drive gear (4-1-2-2) is fastened to the motor output shaft. The drive gear (4-1-2-2) meshes with the transition gear (4-1-2-3), and the transition gear (4-1-2-3) meshes with the rack (4-1-2-4) to form a transmission pair.

5. The wire cutting machine for cutting cylindrical bars according to claim 2 or 3, characterized in that: The locking mechanism (4-1-3) comprises two symmetrically arranged parts, each of which is equipped with a locking cylinder (4-1-3-1), a locking block (4-1-3-2), and a locking slide rail (4-1-3-3). The locking cylinder (4-1-3-1) is mounted on the workpiece clamping unit moving seat (4-1-4) in a vertical arrangement, with its telescopic rod extending downwards and a locking block (4-1-3-2) fitted at the end of the telescopic rod. The locking slide rail (4-1-3-3) is fixed on the worktable body (4-2), and a locking groove matching the locking block (4-1-3-2) is provided on the locking slide rail (4-1-3-3).

6. The wire cutting machine for cutting cylindrical bars according to claim 3, characterized in that: The workpiece clamping unit is also provided with a workpiece position adjustment mechanism (4-1-5). The workpiece position adjustment mechanism (4-1-5) is arranged in the clamping mechanism (4-1-1) and includes two parts arranged symmetrically on the left and right sides. It is located between two sets of jaws (4-1-1-1) arranged in the front and back directions on the left and right sides of the jaw assembly seat (4-1-1-4). The workpiece position adjustment mechanism (4-1-5) is provided with a roller (4-1-5-1) and a roller support seat (4-1-5-2). One end of the roller (4-1-5-1) is hinged to the roller support seat (4-1-5-2), and the other end is hinged to the jaw assembly seat (4-1-1-4) in the clamping mechanism. The two sets of rollers (4-1-5-1) are arranged in a V-shape.

7. The wire cutting machine for cutting cylindrical bars according to claim 6, characterized in that: The cutting wire winding system (6) includes a cutting wire (6-1), a pay-off wheel assembly (6-2), a guide wheel assembly, a take-up wheel assembly (6-7), and a cutting position adjustment mechanism. The cutting wire (6-1) passes around the guide wheel assembly, and its two ends are wound on the wire wheels of the pay-off wheel assembly (6-1) and the take-up wheel assembly (6-7), respectively, to match single-wire cutting and double-wire cutting modes with two winding methods. The cutting position adjustment mechanism includes a movable guide wheel seat (6-5) and a motor-driven screw nut transmission assembly (6-6), which adjusts the front and back positions of the cutting section of the cutting wire by moving the movable guide wheel seat (6-5) back and forth. The guide wheel assembly includes a tension wheel (6-4) and several guide wheels (6-3). The tension wheel (6-4) is installed on the cutting wire lifting and feeding device (7), and the guide wheels (6-3) are installed on the movable guide wheel seat (6-5) of the cutting wire lifting and feeding device (7) and the cutting position adjustment mechanism.

8. The wire cutting machine for cutting cylindrical bars according to claim 7, characterized in that: It is also provided with a machine body shell (8), a protective cover (10) and an operation panel (9); the machine body shell (8) is fixedly assembled with the machine body (2) and the machine base (3); the protective cover (10) is arranged outside the motor-driven screw nut assembly (6-6) in the material support worktable horizontal moving device (5) and the wire cutting winding system (6); the operation panel (9) is located on one side of the machine body shell (8) and is connected to the control system of the wire cutting machine through a wire.

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