Machine tool for net-shaped thread machining

Abstract

A machine tool for net-shaped thread machining comprises a numerical control machine tool body, a clamping jaw is arranged at the left end of the numerical control machine tool body, a clamping jaw mechanism is arranged at the right end of the numerical control machine tool body, a cutter support is arranged on the numerical control machine tool body between the clamping jaw and the clamping jaw mechanism, the cutter support is assembled on the numerical control machine tool body, and a cutter is fixed to the cutter support. A supporting seat is fixed to the left side of the sliding frame, a vertical plate is vertically fixed to the top end of the supporting seat, an upper supporting plate is horizontally fixed to the upper end of one side of the vertical plate, a lower supporting plate parallel to the upper supporting plate is arranged below the upper supporting plate, and an F-shaped supporting frame is defined by the upper supporting plate, the lower supporting plate and the vertical plate; the upper supporting plate, the lower supporting plate and the vertical plate are all in threaded connection with supporting rods, the ends of the supporting rods all extend into the supporting frame, during use, a screw rod blank is located in the supporting frame, and the ends of the supporting rods abut against the screw rod. The device is simple in structure and convenient to use.

Description

TECHNICAL FIELD

[0001] The utility model belongs to threaded pipe processing technical field especially relates to a machine tool for mesh threaded processing. BACKGROUND

[0002] The long axis mesh-shaped special-shaped threaded workpiece is milled on the four-axis numerical control machining center, the production efficiency is low, the cost is high, and the rigidity is poor due to the large length-diameter ratio of the workpiece in the machining process. With the continuous increase of the machining length, an extremely unstable machining area is inevitably generated in the central range close to the workpiece. In this area, various machining problems such as tool vibration, tool relief, waist drum shape, polygon, bamboo joint shape, etc. will occur, which makes the product quality cannot be guaranteed and even leads to product scrap. In addition, the milling efficiency is half of the turning efficiency, or even lower, which makes this type of parts become a typical part with difficult machining, low efficiency and difficult quality control in actual production. Therefore, in the prior art, when the long axis mesh-shaped threaded workpiece is machined, the center close to the workpiece is unstable during machining due to the long workpiece, and vibration is prone to occur, resulting in poor workpiece machining quality, high scrap rate and great inconvenience to production. SUMMARY

[0003] The utility model discloses in order to solve the long axle type workpiece on lathe processing easily appears vibration, causes the technical problem of inconvenient processing, provides a machine tool for mesh thread processing, including numerical control machine tool body, the left end numerical control machine tool body rotatable is equipped with for clamping screw blank's clamping jaw, and the clamping jaw selects three jaw chuck (three jaw chuck is prior art, and three jaw chuck is composed of chuck body, movable jaw and jaw drive mechanism, and the machine tool accessory is utilized radial movement of three movable jaws on the chuck body, and workpiece clamping and positioning). The right end of numerical control machine tool body is equipped with the clamping jaw mechanism for clamping screw blank, and the clamping jaw mechanism includes the support block fixed on the numerical control machine tool body, and the support block is connected with the horizontally arranged lead screw, and the both ends of the lead screw extend out of the support block, and the left end of the lead screw is fixed with the top cone for pressing the screw blank, and the right end of the lead screw is fixed with the hand wheel, and the lead screw is driven to rotate through the hand wheel, so as to adjust the distance between the top cone and the clamping jaw, and the top cone is pressed to the screw blank to be processed. The numerical control machine tool body between the clamping jaw and the clamping jaw mechanism is equipped with a tool holder, and the tool holder is movably assembled on the numerical control machine tool body through the sliding frame, and the sliding frame is part of the numerical control machine tool body, and can realize left and right and front and back displacement, and the tool holder is detachably fixed with a tool (not shown on the attached drawings). The left side of the sliding frame is detachably fixed with a support seat, the top end of the support seat is fixed with a vertical stand, the upper end of one side of the stand is fixed with a horizontal upper support plate, the lower side of the upper support plate is provided with a lower support plate arranged in parallel with the upper support plate, the upper support plate, the lower support plate and the stand form an F-shaped support frame, and the upper support plate, the lower support plate and the stand are all connected with support rods, and the end of the support rod extends into the support frame, and when used, the screw blank is located in the support frame, and the end of the support rod abuts against the screw blank, which can limit and support the screw blank, and will not hinder the normal transmission of the screw blank.

[0004] Preferably, the outer end of the support rod is fixed with a knob for rotating the support rod.

[0005] Preferably, the top cone is coaxially arranged with the clamping jaw.

[0006] Preferably, the support seat is detachably fixed on the sliding frame through a press buckle lock.

[0007] Preferably, the distance between the upper support plate and the lower support plate is greater than the outer diameter of the screw blank to be produced.

[0008] The above scheme has the following advantages:

[0009] The support rods are threadedly connected to the upper support plate, the lower support plate and the vertical plate, in use, the screw blank is located in the support frame, and the end of the support rod abuts against the screw blank, which can limit and support the screw blank and will not hinder the normal transmission of the screw blank; the clamping jaw mechanism is convenient for assembling and disassembling the screw blank according to requirements, and supports the screw blank; the clamping jaw is convenient for clamping and fixing one end of the screw blank. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 It is a front view structural schematic diagram of the utility model;

[0011] Figure 2 It is Figure 1 A enlarged view of A part;

[0012] Figure 3 It is a structural schematic diagram of the support frame.

[0013] Sign significance: 1, numerical control machine tool body; 2, clamping jaw mechanism; 3, tool support; 4, support frame; 5, sliding frame; 6, screw blank; 11, clamping jaw; 21, support block; 22, screw; 23, top cone; 24, hand wheel; 41, vertical plate; 42, upper support plate; 43, lower support plate; 44, support rod; 45, knob; 51, support seat; 52, buckle lock. DETAILED DESCRIPTION

[0014] As Figures 1-3As shown, a machine tool for mesh thread processing, including numerical control machine tool body 1, the left end of numerical control machine tool body 1 rotatably provided with chuck jaw 11 for clamping screw blank 6, chuck jaw 11 selects three-jaw chuck (three-jaw chuck is prior art, three-jaw chuck is composed of chuck body, movable jaw and jaw driving mechanism, which utilizes the radial movement of the three movable jaws evenly distributed on the chuck body to clamp and position the workpiece). The right end of numerical control machine tool body 1 is provided with chuck mechanism 2 for clamping screw blank 6, chuck mechanism 2 includes support block 21 fixed on numerical control machine tool body 1, support block 21 is threadedly connected with horizontally arranged lead screw 22, both ends of lead screw 22 extend out of support block 21, the left end of lead screw 22 is fixed with top cone 23 for pressing screw blank 6, the right end of lead screw 22 is fixed with hand wheel 24, lead screw 22 is driven to rotate by hand wheel 24, thereby adjusting the distance between top cone 23 and chuck jaw 11, facilitating the adjustment of top cone 23 pressing the screw blank 6 to be processed. Knife holder 3 is arranged on numerical control machine tool body 1 between chuck jaw 11 and chuck mechanism, knife holder 3 is movably assembled on numerical control machine tool body 1 through sliding frame 5, sliding frame 5 is part of numerical control machine tool body 1, which can realize left and right and forward and backward displacement, knife holder 3 is detachably fixed with a tool (not shown in the drawings). The left side of sliding frame 5 is detachably fixed with support seat 51, the top end of support seat 51 is fixed with vertical stand 41, the upper end of one side of vertical stand 41 is fixed with horizontal upper support plate 42, the lower side of upper support plate 42 is provided with lower support plate 43 arranged in parallel with upper support plate 42, upper support plate 42, lower support plate 43 and vertical stand 41 form F-shaped support frame 4, and upper support plate 42, lower support plate 43 and vertical stand 41 are all threadedly connected with support rods 44, the ends of support rods 44 all extend into support frame 4, in use, screw blank 6 is located in support frame 4, and the ends of support rods 44 abut against screw blank 6, which can not only limit and support screw blank 6, but also will not hinder the normal transmission of screw blank 6.

[0015] Preferably, the outer ends of support rods 44 are all fixed with knobs 45 for facilitating the rotation of support rods 44.

[0016] Preferably, top cone 23 is coaxially arranged with chuck jaw 11.

[0017] Preferably, support seat 51 is detachably fixed on sliding frame 5 through pressure buckle lock 52.

[0018] Preferably, the distance between upper support plate 42 and lower support plate 43 is greater than the outer diameter of the screw blank 6 to be produced.

[0019] Use process:

[0020] The utility model discloses a hand wheel 24 is rotated counterclockwise first, hand wheel 24 drives lead screw 22 to rotate, and the lead screw 22 removes to right along support block 21, and the distance between top cone 23 and clamping jaw 11 increases, and then take the screw blank 6 of processing to, the left end of screw blank 6 is fixed on clamping jaw 11, and screw blank 6 passes through support frame 4, and then hand wheel 24 is rotated clockwise, and hand wheel 24 drives lead screw 22 to move left, and top cone 23 contacts and tightly presses the right end of screw blank 6, then respectively rotate knob 45, and knob 45 drives support rod 44 to rotate until the end of support rod 44 and the outer surface of screw blank 6 contact, after the position of each support rod 44 is adjusted, start numerical control machine tool body 1, and under the action of tool, the outer surface of screw blank 6 is processed thread, under the action of sliding frame 5, and tool support 3 and support frame 4 all move in horizontal direction, and it is convenient to process the whole screw blank 6.

[0021] In the description of the utility model, it is understood that the orientation or position relation that the terms "upper", "lower", "left", "right", "top", "bottom", "horizontal", "vertical" indicate is based on the orientation or position relation shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and is not instructing or implying the device or element that is indicated must have a particular orientation, constructs and operates with a particular orientation, therefore can not be understood as the limitation of the utility model.

[0022] The above embodiment is the description of the utility model, is not the limitation of the utility model, and any simple transformation scheme of the utility model belongs to the protection scope of the utility model.

Claims

1. A machine tool for machining mesh threads, comprising a CNC machine tool body, a rotatable jaw for clamping a screw blank at the left end of the CNC machine tool body, a jaw mechanism for engaging the screw blank at the right end of the CNC machine tool body, and a tool holder on the CNC machine tool body between the jaw and the jaw mechanism, the tool holder being movably mounted on the CNC machine tool body via a sliding frame, and a tool being detachably fixed on the tool holder, characterized in that: The left side of the sliding frame is detachably fixed with a support base, the top end of the support base is fixed with a vertical stand plate, the upper end of one side of the stand plate is fixed with a horizontal upper support plate, the lower side of the upper support plate is provided with a lower support plate arranged in parallel with the upper support plate, the upper support plate, the lower support plate and the stand plate enclose an F-shaped support frame, and the upper support plate, the lower support plate and the stand plate are all threadedly connected with support rods, the end portions of the support rods all extend into the support frame, in use, the screw blank is located in the support frame, and the end portions of the support rods abut against the screw.

2. A machine tool for processing a net thread according to claim 1, characterized in that: The outer ends of the support rods are all fixed with knobs facilitating the rotation of the support rods.

3. A machine tool for processing a net thread according to claim 1, characterized in that: The claw mechanism comprises a support block fixed on the body of the numerical control machine tool, a horizontal screw is threadedly connected on the support block, the two ends of the screw both extend out of the support block, the left end of the screw is fixed with a top cone for tightly pressing the screw blank, and the right end of the screw is fixed with a hand wheel.

4. A machine tool for processing a net thread according to claim 3, characterized in that: The top cone is coaxially arranged with the clamping jaw.

5. A machine tool for processing a net thread according to claim 4, characterized in that: The clamping jaw is a three-jaw chuck.

6. A machine tool for processing a net thread according to claim 1, characterized in that: The support base is detachably fixed on the sliding frame through a press buckle lock.

7. A machine tool for processing a net thread according to claim 1, characterized in that: The distance between the upper support plate and the lower support plate is greater than the outer diameter of the screw blank to be produced.

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