Split type internal thread milling cutter

Abstract

The utility model discloses a split type internal thread milling cutter which comprises a base, a bearing disc, a supporting rod, a fixed seat, a transmission rod, a driven rod, an internal thread milling cutter, a transmission mechanism and an adjusting mechanism, the supporting rod is fixed between the base and the bearing disc, the fixed seat is fixed on the upper surface of the bearing disc, the transmission rod is rotatably connected to the fixed seat, and the driven rod is rotatably connected to the driven rod. The driven rod is slidably connected to the axis of the transmission rod and is longer than the transmission rod. The device has the advantages that the transmission mechanism and the adjusting mechanism are arranged, the servo motor in the transmission mechanism drives the driving gear to rotate, the driving fluted disc is meshed and linked, the transmission gear is meshed and linked through the driving fluted disc, and the transmission gear is meshed and linked through the adjusting mechanism. According to the internal thread milling machine, the driving rod, the driven rod and the internal thread milling cutters are driven to rotate integrally to mill a workpiece, and during milling, the internal thread milling cutters can synchronously rotate and synchronously move, so that the synchronous milling operation on the workpiece is realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to a thread milling cutter, concretely is a split type internal thread milling cutter and belongs to the thread milling cutter technical field. BACKGROUND

[0002] Common thread milling cutters are whole hard alloy thread milling cutters and rack blade type thread milling cutters, have 5-7 tooth tip thread, can complete thread processing once, and the general processing flow of thread milling cutter is that the cutting edge of thread milling cutter is covered with thread processing teeth, three-axis linkage of numerical control machine tool is used to form thread by helical interpolation using the forming thread milling cutter, and thread processing is completed by one revolution of the cutter along the helix, or multiple revolutions are used to reach the thread requirement depth.

[0003] However, the existing thread milling cutters have various problems, for example, in the internal thread milling cutter disclosed in the publication No. CN102837086A, the single-tooth thread cutter occupies less processing space, and the chip removal is smooth, and the relief angle of the thread can be corrected according to the helix angle of the processed thread to ensure smooth cutting of the cutter, but in the current machining operation, one set of transmission equipment is needed to drive the operation of one thread milling cutter, if multiple thread milling cutters are needed to simultaneously process the periphery of a workpiece, the corresponding number of transmission equipment needs to be provided according to the number of thread milling cutters, and the multiple sets of transmission equipment need to be centrally controlled by an external control device, which is complicated to operate and time-consuming and laborious, and seriously affects the work efficiency. UTILITY MODEL CONTENTS

[0004] The utility model technical scheme provides a solution significantly different from the prior art in view of the technical problem that the prior art solution is too single, and specifically, the purpose of the utility model is to solve the above-mentioned shortcomings in the prior art, and a split type internal thread milling cutter is provided.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] A split type internal thread milling cutter, comprising a base, a supporting tray, a supporting rod, a fixing seat, a transmission rod, a driven rod, an internal thread milling cutter, a transmission mechanism and an adjusting mechanism, the supporting rod is fixed between the base and the supporting tray, the fixing seat is fixed on the upper surface of the supporting tray, the transmission rod is rotatably connected to the fixing seat, the driven rod is slidably connected to the transmission rod shaft, and the length of the driven rod is greater than that of the transmission rod, and the internal thread milling cutter is connected to one end of the driven rod close to the shaft of the supporting tray.

[0007] The transmission mechanism comprises a transmission gear, a driving gear plate, a servo motor and a driving gear, the transmission gear is coaxially fixed on the transmission rod away from the inner thread milling cutter, the driving gear plate is rotationally connected at the edge of the supporting plate, the servo motor is fixed on the upper surface of the supporting plate, the driving gear is coaxially fixed on the output shaft of the servo motor, and the driving gear is engaged with the driving gear plate.

[0008] As a further scheme of the utility model: the adjusting mechanism includes adjusting cylinder, screw rod and worm gear, the adjusting cylinder is slidingly connected on the supporting rod and is in circular truncated cone structure, and the one end of the driven rod slidingly abuts with the inner wall of the adjusting cylinder, the screw rod is coaxially fixed at the bottom center of the adjusting cylinder and passes through the base and is slidingly connected with the base, the worm gear is rotationally connected at the axis of the base, and a screw hole is arranged at the axis of the worm gear, and the screw rod is threadedly matched in the screw hole.

[0009] As a further scheme of the utility model: the base is rotationally connected with a worm, and the worm is engagedly connected at the edge of the worm gear.

[0010] As a further scheme of the utility model: the abutting end of the driven rod and the adjusting cylinder is rotationally connected with a ball in an embedded mode, and the ball abuts with the inner wall of the adjusting cylinder.

[0011] As a further scheme of the utility model: the side wall of the driven rod is fixed with a clamping block, the inner wall of the transmission rod is provided with a notch, and the clamping block is slidingly clamped in the notch.

[0012] As a further scheme of the utility model: a reset spring is sleeved on the one end of the driven rod close to the transmission gear, and a limiting disc is arranged on the driven rod, one end of the reset spring abuts with the transmission gear, and the other end abuts with the limiting disc.

[0013] The utility model discloses the beneficial effect is:

[0014] In the utility model, through setting transmission mechanism and adjusting mechanism, then through servo motor in transmission mechanism and drive the driving gear rotation, and then make driving gear plate meshing linkage, and make transmission gear meshing linkage through driving gear plate, then drive transmission rod, driven rod and inner thread milling cutter whole rotation and carry out milling operation to workpiece, and when milling, through worm drive worm gear rotation, then make screw rod thread linkage in the screw hole of worm gear, and drive adjusting cylinder to move upwards, then extrude driven rod sliding, then make multiple inner thread milling cutters can also move synchronously while rotating synchronously, then realize synchronous milling operation to workpiece, avoid needing to set multiple transmission equipment, also avoid needing to carry out centralized regulation and control through external control device, simple and efficient. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the external connection structure schematic view of the utility model;

[0016] Figure 2 It is the bearing tray and the whole connection structure schematic view of the utility model;

[0017] Figure 3 It is the transmission rod connection structure schematic view of the utility model;

[0018] Figure 4 It is the driven rod and the connection structure schematic view of the utility model.

[0019] In the drawing: 1, base, 2, bearing tray, 3, support rod, 4, fixed seat, 5, transmission rod, 6, driven rod, 7, internal thread milling cutter, 8, transmission mechanism, 81, transmission gear, 82, driving toothed disc, 83, servo motor, 84, driving gear, 9, adjusting mechanism, 91, adjusting cylinder, 92, screw rod, 93, worm wheel, 94, worm, 10, ball, 11, clamping block, 12, return spring. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model. Embodiment one

[0021] As Figures 1 to 4 shown, a split internal thread milling cutter, including base 1, bearing tray 2, support rod 3, fixed seat 4, transmission rod 5, driven rod 6, internal thread milling cutter 7, transmission mechanism 8 and adjusting mechanism 9, support rod 3 is fixed between base 1, bearing tray 2, fixed seat 4 is fixed on the upper surface of bearing tray 2, transmission rod 5 is rotatably connected on fixed seat 4, driven rod 6 is slidably connected at the shaft center of transmission rod 5, and the length of driven rod 6 is greater than that of transmission rod 5, internal thread milling cutter 7 is connected at the end of driven rod 6 close to the shaft center of bearing tray 2;

[0022] Transmission mechanism 8 includes transmission gear 81, driving toothed disc 82, servo motor 83 and driving gear 84, transmission gear 81 is coaxially fixed on the end of transmission rod 5 away from internal thread milling cutter 7, driving toothed disc 82 is rotatably connected at the edge of bearing tray 2, servo motor 83 is fixed on the upper surface of bearing tray 2, driving gear 84 is coaxially fixed on the output shaft of servo motor 83, and driving gear 84 is engaged with driving toothed disc 82;

[0023] The adjusting mechanism 9 comprises an adjusting cylinder 91, a lead screw 92 and a worm wheel 93, the adjusting cylinder 91 is slidingly connected to the supporting rod 3 and is in a circular truncated cone structure, and one end of the driven rod 6 slidingly abuts against the inner wall of the adjusting cylinder 91, the lead screw 92 is coaxially fixed at the bottom center of the adjusting cylinder 91 and penetrates through the base 1 and is slidingly connected with the base 1, the worm wheel 93 is rotationally connected to the shaft center of the base 1, a screw hole is arranged at the shaft center of the worm wheel 93, the lead screw 92 is threadedly connected in the screw hole, and the base 1 is rotationally connected with a worm gear 94, and the worm gear 94 is meshingly connected at the edge of the worm wheel 93.

[0024] In the utility model, through the setting of transmission mechanism 8 and adjusting mechanism 9, further through the servo motor 83 in transmission mechanism 8 drive driving gear 84 rotates, further make driving tooth disc 82 meshing linkage, and through driving tooth disc 82 make transmission gear 81 meshing linkage, further drive transmission rod 5, driven rod 6 and internal thread milling cutter 7 whole rotation and carry out milling operation to work piece, and when milling, through worm gear 94 drive worm wheel 93 rotates, further make lead screw 92 threadedly link in the screw hole of worm wheel 93, and drive adjusting cylinder 91 to move upwards, further extrude driven rod 6 sliding, further make multiple internal thread milling cutter 7 can also move synchronously while rotating synchronously, further realize synchronous milling operation to work piece, avoid needing to set multiple transmission equipment, also avoid needing to carry out centralized regulation and control through external control device, simple and efficient. Embodiment two

[0025] As Figures 1 to 4 Indicated, this embodiment includes all technical features in embodiment one, further includes:

[0026] The abutment end of the driven rod 6 and the adjusting cylinder 91 is rotatably connected with a ball 10 in an embedded manner, the ball 10 abuts against the inner wall of the adjusting cylinder 91, and the rolling of the ball 10 avoids the friction between the driven rod 6 and the adjusting cylinder 91, thereby avoiding the abrasion of the adjusting cylinder 91.

[0027] The side wall of the driven rod 6 is fixed with a clamping block 11, the inner wall of the transmission rod 5 is provided with a notch, and the clamping block 11 is slidingly connected in the notch. The clamping block 11 limits the driven rod 6, so that the driven rod 6 can slide in the transmission rod 5 while rotating synchronously with the transmission rod 5.

[0028] A reset spring 12 is sleeved on one end of the driven rod 6 close to the transmission gear 81, and a limiting disc is arranged on the driven rod 6. One end of the reset spring 12 abuts against the transmission gear 81, and the other end abuts against the limiting disc. The elastic force of the reset spring 12 enables the driven rod 6 to be quickly reset.

[0029] Working principle: when using the thread milling cutter, first, the workpiece is placed at the center of the bearing tray 2, then the servo motor 83 is started, the driving gear 84 is driven to rotate by the servo motor 83, at this time, the driving gear plate 82 is engaged with linkage, and the transmission gear 81 is engaged with linkage, thereby driving the transmission rod 5, the driven rod 6 and the inner thread milling cutter 7 to rotate as a whole and carry out milling work on the workpiece, and during milling, the worm 94 drives the worm gear 93 to rotate, thereby making the screw rod 92 threadedly linked in the screw hole of the worm gear 93, and driving the adjusting cylinder 91 to move upwards, thereby extruding the driven rod 6 to slide, so that multiple thread milling cutters 7 can be synchronously abutted with the workpiece, and the workpiece can be milled.

[0030] It is apparent for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, but can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered in all aspects as illustrative and not restrictive, and the scope of the present application is defined by the appended claims rather than the above description, and it is intended to encompass all changes falling within the meaning and scope of the equivalent elements of the claims. Any reference signs in the claims should not be considered as limiting the claims to which they belong.

[0031] In addition, it should be understood that, although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be combined appropriately to form other embodiments that those skilled in the art can understand.

Claims

1. A split internal thread milling cutter comprising a base (1), a supporting tray (2), a supporting rod (3), a fixing seat (4), a driving rod (5), a driven rod (6), an internal thread milling cutter (7), a transmission mechanism (8) and an adjusting mechanism (9), characterized in that, The support rod (3) is fixed between the base (1) and the supporting tray (2), the fixed seat (4) is fixed on the upper surface of the supporting tray (2), the transmission rod (5) is rotatably connected to the fixed seat (4), the driven rod (6) is slidably connected to the axis of the transmission rod (5), and the length of the driven rod (6) is greater than that of the transmission rod (5), and the internal thread milling cutter (7) is connected to one end of the driven rod (6) close to the axis of the supporting tray (2). The transmission mechanism (8) comprises a transmission gear (81), a driving toothed disc (82), a servo motor (83) and a driving gear (84), the transmission gear (81) is coaxially fixed to one end of the transmission rod (5) away from the internal thread milling cutter (7), the driving toothed disc (82) is rotatably connected to the edge of the supporting tray (2), the servo motor (83) is fixed on the upper surface of the supporting tray (2), and the driving gear (84) is coaxially fixed to the output shaft of the servo motor (83), and the driving gear (84) is engaged with the driving toothed disc (82).

2. The split-type internal thread cutter according to claim 1, wherein: The adjusting mechanism (9) comprises an adjusting cylinder (91), a lead screw (92) and a worm gear (93), the adjusting cylinder (91) is slidably connected to the support rod (3) and has a circular truncated cone structure, one end of the driven rod (6) is in sliding abutment with the inner wall of the adjusting cylinder (91), the lead screw (92) is coaxially fixed to the center of the bottom of the adjusting cylinder (91) and penetrates through the base (1), and is slidably connected with the base (1), the worm gear (93) is rotatably connected to the axis of the base (1), and a threaded hole is provided at the axis of the worm gear (93), and the lead screw (92) is threadedly connected in the threaded hole.

3. A split-type internal thread cutter according to claim 2, wherein: The base (1) is rotatably connected with a worm (94), and the worm (94) is engagedly connected to the edge of the worm gear (93).

4. The split-type internal thread cutter according to claim 2, wherein: The abutment end of the driven rod (6) and the adjusting cylinder (91) is rotatably connected with a ball (10) in an embedded manner, and the ball (10) is in abutment with the inner wall of the adjusting cylinder (91).

5. The split-type internal thread cutter according to claim 1, wherein: The side wall of the driven rod (6) is fixed with a clamping block (11), the inner wall of the transmission rod (5) is provided with a notch, and the clamping block (11) is slidably clamped in the notch.

6. The split-type internal thread cutter according to claim 1, wherein: A reset spring (12) is arranged on one end of the driven rod (6) close to the transmission gear (81), and a limiting disc is arranged on the driven rod (6), one end of the reset spring (12) is in abutment with the transmission gear (81), and the other end is in abutment with the limiting disc.

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