Cylindrical roller enveloping ring surface worm transmission device for machine tool machining

Abstract

The utility model discloses a cylindrical roller enveloping ring surface worm transmission device for machine tool machining. The cylindrical roller enveloping ring surface worm transmission device comprises a driving mechanism; the shell is arranged on the driving mechanism; the worm body is arranged in the shell; the two cone bearings are respectively arranged on the two connecting rods of the worm body; the two eccentric shaft sleeves are respectively clamped on the two cone bearings; the two axial adjusting end covers are in threaded connection with the inner walls of the two eccentric shaft sleeves, and the eccentric shaft sleeves are arranged to rotate and finely adjust the center distance of the worm body. Parts in the shell are detached, the eccentric shaft sleeve is rotated, and the outer circle and the inner circle of the eccentric shaft sleeve are not concentric, so that the center distance of the worm body is finely adjusted, the backlash between the worm body and a cam roller on an output shaft is zero, and the transmission error of equipment is reduced through the structural design.

Description

TECHNICAL FIELD

[0001] The utility model relates to machine tool machining transmission device technical field, concretely is a cylindrical roller envelope torus worm drive device for machine tool machining. BACKGROUND

[0002] Machine tool machining is a kind of machining operation such as cutting, forming of metal or other materials using machine tool equipment, when machine tool carries out heavy cutting, grinding and other machining operations, because there will be greater cutting force and torque in these machining processes, so cylindrical roller envelope torus worm drive device will be used, cylindrical roller envelope torus worm drive device is mainly composed of motor, worm and cylindrical roller, when worm rotates, cylindrical roller rolls in the spiral groove of worm, and simultaneously relatively moves along the axial direction of worm, because the generatrix of cylindrical roller and the spiral surface of worm are line contact, in the rolling process, the surface of cylindrical roller gradually envelopes the tooth surface of worm, realizes the meshing transmission between worm and worm gear.

[0003] At present, cylindrical roller envelope torus worm drive device is used for a long time, wear will appear between worm and cylindrical roller, side gap will appear between worm and cylindrical roller, which leads to transmission error of worm and cylindrical roller, makes equipment transmission worse, so it is inconvenient to use. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at providing a cylindrical roller envelope torus worm drive device for machine tool machining to solve the problems in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical scheme: a cylindrical roller envelope torus worm drive device for machine tool machining, comprising: driving mechanism;Housing, set on the driving mechanism;Worm body, set in the housing;Two taper bearings, respectively installed on the two connecting rods of the worm body;Two eccentric shaft sleeves, respectively clamped on two taper bearings;Two axial adjustment end covers, threadedly connected on the inner wall of two eccentric shaft sleeves, the eccentric shaft sleeve is set as rotating fine adjustment center distance of worm body.

[0006] As further preferred of the technical scheme, it further comprises: driving gear, installed on the output rod in the driving mechanism;Driven gear, installed on the worm body, and the driven gear and the driving gear are mutually engaged;Output shaft, set in the housing;A plurality of cam rollers, all fixedly connected on the output shaft, and the cam roller is engaged in the spiral groove of the worm body;Workbench, fixedly connected on one end of the output shaft.

[0007] As a further preferred embodiment of this technical solution, it also includes: a pressure cap, which is fixedly connected to the worm gear body, and one side of the pressure cap abuts against one side of the driven gear.

[0008] As a further preferred embodiment of this technical solution, it also includes: a turntable bearing, mounted on the output shaft; and a turntable base, bolted to the turntable bearing, and the turntable base is bolted to the housing.

[0009] As a further preferred embodiment of this technical solution, it also includes: two mounting slots, both formed on the outer casing; two outer ring end caps, respectively abutting against the outer walls of the two eccentric bushings, and the two outer ring end caps are respectively installed in the two mounting slots by bolts.

[0010] As a further preferred embodiment of this technical solution, it also includes: two disassembly plates, which are respectively bolted to the two mounting slots.

[0011] As a further preferred embodiment of this technical solution, the outer circle and the inner circle of the eccentric bushing are not concentric.

[0012] This utility model provides a cylindrical roller envelope toroidal worm gear transmission device for machine tool processing, which has the following beneficial effects:

[0013] This invention allows for the disassembly of parts inside the housing and the rotation of the eccentric bushing. Since the outer and inner circles of the eccentric bushing are not concentric, the center distance of the worm gear body can be finely adjusted, resulting in zero backlash between the worm gear body and the cam roller on the output shaft. This structural design reduces the transmission error of the equipment. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the entire utility model;

[0015] Figure 2 This is an exploded structural diagram of the entire utility model;

[0016] Figure 3 This is a partial cross-sectional structural diagram of the worm gear body in this utility model;

[0017] Figure 4 for Figure 3 A magnified view of a portion of region B in the middle;

[0018] Figure 5 This is a schematic diagram of the output shaft in this utility model;

[0019] Figure 6 for Figure 2 A magnified view of a portion of region A in the middle.

[0020] In the diagram: 1. Drive mechanism; 2. Housing; 3. Worktable; 4. Worm gear body; 5. Output shaft; 6. Drive gear; 7. Driven gear; 8. Tapered bearing; 9. Outer ring end cover; 10. Eccentric bushing; 11. Axial adjustment end cover; 12. Turntable base; 13. Turntable bearing; 14. Cam roller; 15. Pressure cover; 16. Disassembly plate; 17. Mounting slot. Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0022] This utility model provides a technical solution: such as Figure 1 - Figure 6 As shown in this embodiment, a cylindrical roller enveloping toroidal worm gear transmission device for machine tool processing includes: a drive mechanism 1; a housing 2 disposed on the drive mechanism 1; a worm body 4 disposed inside the housing 2; two tapered bearings 8 respectively mounted on two connecting rods of the worm body 4; two eccentric bushings 10 respectively snapped onto the two tapered bearings 8; and two axial adjustment end caps 11 threadedly connected to the inner walls of the two eccentric bushings 10, wherein the eccentric bushings 10 are configured to rotate and finely adjust the center distance of the worm body 4.

[0023] By disassembling the parts inside the housing 2 and rotating the eccentric bushing 10, the outer circle and inner circle of the eccentric bushing 10 are not concentric, thereby fine-tuning the center distance of the worm body 4, so that the side clearance between the worm body 4 and the cam roller 14 on the output shaft 5 is zero. This structural design reduces the transmission error of the equipment. The drive mechanism 1 is equipped with a motor eccentric sleeve. After adjusting the eccentric bushing 10, the motor eccentric sleeve on the drive mechanism 1 also needs to be adjusted. When adjusting the axial adjustment end cover 11, the axial position of the worm body 4 is adjusted.

[0024] like Figure 2 and Figure 5 As shown, it also includes: a driving gear 6, mounted on the output rod inside the drive mechanism 1; a driven gear 7, mounted on the worm body 4, and the driven gear 7 meshes with the driving gear 6; an output shaft 5, disposed inside the housing 2; several cam rollers 14, all fixedly connected to the output shaft 5, and the cam rollers 14 mesh with the helical grooves of the worm body 4; and a worktable 3, fixedly connected to one end of the output shaft 5.

[0025] By activating the drive mechanism 1, the worm gear body 4 rotates inside the housing 2, while the output shaft 5 moves relative to the axial direction of the housing 2, causing the worktable 3 to rotate and thus rotating the workpiece on the machine tool.

[0026] like Figure 3As shown, it also includes: a pressure cap 15, which is fixedly connected to the worm gear body 4, and one side of the pressure cap 15 abuts against one side of the driven gear 7.

[0027] The pressure cap 15 is designed to limit the driven gear 7, preventing it from sliding on the worm gear body 4 and causing misalignment between the driven gear 7 and the driving gear 6.

[0028] like Figure 5 As shown, it also includes: a turntable bearing 13, mounted on the output shaft 5; and a turntable base 12, mounted on the turntable bearing 13 by bolts, and the turntable base 12 is mounted on the housing 2 by bolts.

[0029] The output shaft 5 is fixed and supported by the structural design of the turntable bearing 12 and the turntable base 13, ensuring that the output shaft 5 rotates stably within the housing 2.

[0030] like Figure 2 and Figure 6 As shown, it also includes: two mounting slots 17, both of which are opened on the outer shell 2; two outer ring end caps 9, which respectively abut against the outer walls of the two eccentric bushings 10, and the two outer ring end caps 9 are respectively installed in the two mounting slots 17 by bolts.

[0031] Through the structural design of the outer ring end cap 9 and the mounting groove 17, the outer ring end cap 9 presses the eccentric bushing 10 tightly, so that the eccentric bushing 10 will not rotate with the rotation of the worm body 4 after it is adjusted.

[0032] like Figure 2 As shown, it also includes two disassembly plates 16, which are respectively connected to two mounting slots 17 by bolts.

[0033] By disassembling the structure of plate 16, the mounting groove 17 is sealed to prevent dust and water from entering the mounting groove 17 and causing corrosion of the bolts fixing the outer ring end cap 9.

[0034] like Figure 3 , Figure 4 and Figure 6 As shown, the outer circle and inner circle of the eccentric bushing 10 are not concentric.

[0035] Because the outer circle and inner circle of the eccentric bushing 10 are not concentric, when the bushing is rotated, the outer circle surface is displaced relative to the mounting reference surface, thereby changing the axial position of the worm body 4.

[0036] This utility model provides a cylindrical roller envelope toroidal worm gear transmission device for machine tool processing, and its specific working principle is as follows:

[0037] When cutting and grinding workpiece on the machine tool, first fix the workpiece on the worktable 3, open the driving mechanism 1, the worm body 4 rotates in the shell 2, the cam roller 14 on the output shaft 5 meshes with the worm body 4, the output shaft 5 moves relatively in the axial direction of the shell 2, so that the worktable 3 rotates, the machine tool processes the workpiece, when the equipment is used for a long time, the side gap between the worm body 4 and the cam roller 14 appears, the parts in the shell 2 are disassembled, the eccentric shaft sleeve 10 is rotated, and the outer circle of the eccentric shaft sleeve 10 is eccentric with the inner circle, the eccentric shaft sleeve 10 also rotates when the axial adjustment end cover 11 is rotated, so that the center distance of the worm body 4 is finely adjusted, the side gap between the worm body 4 and the cam roller 14 on the output shaft 5 is zero, and then the parts are installed in the equipment in the shell 2, after the installation is completed, the above operation is repeated to drive the workpiece to rotate.

[0038] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cylindrical roller enveloping toroidal worm gear transmission device for machine tool processing, characterized in that, include: Drive mechanism (1); The outer casing (2) is disposed on the drive mechanism (1); The worm gear body (4) is disposed inside the outer casing (2); Two tapered bearings (8) are respectively installed on the two connecting rods of the worm gear body (4); Two eccentric bushings (10) are respectively snapped onto the two tapered bearings (8); Two axial adjustment end caps (11) are threaded to the inner walls of the two eccentric bushings (10); The eccentric bushing (10) is set to rotate the center distance of the fine-tuning worm gear body (4).

2. The cylindrical roller enveloping toroidal worm gear transmission device for machine tool processing according to claim 1, characterized in that, Also includes: The drive gear (6) is mounted on the output rod inside the drive mechanism (1); Driven gear (7) is mounted on the worm body (4), and driven gear (7) meshes with driving gear (6); The output shaft (5) is disposed inside the housing (2); Several cam rollers (14) are fixedly connected to the output shaft (5), and the cam rollers (14) mesh with the spiral groove of the worm body (4); The worktable (3) is fixedly connected to one end of the output shaft (5).

3. The cylindrical roller enveloping toroidal worm gear transmission device for machine tool processing according to claim 2, characterized in that, Also includes: A pressure cap (15) is fixedly connected to the worm gear body (4), and one side of the pressure cap (15) abuts against one side of the driven gear (7).

4. The cylindrical roller enveloping toroidal worm gear transmission device for machine tool processing according to claim 2, characterized in that, Also includes: A turntable bearing (13) is mounted on the output shaft (5); The turntable base (12) is bolted to the turntable bearing (13), and the turntable base (12) is bolted to the housing (2).

5. A cylindrical roller enveloping toroidal worm gear transmission device for machine tool processing according to claim 1, characterized in that, Also includes: Two mounting slots (17) are both formed on the outer casing (2); Two outer ring end caps (9) abut against the outer walls of the two eccentric bushings (10), and the two outer ring end caps (9) are respectively installed in the two mounting grooves (17) by bolts.

6. A cylindrical roller enveloping toroidal worm gear transmission device for machine tool processing according to claim 5, characterized in that, Also includes: Two disassembly plates (16) are respectively bolted to the two mounting slots (17).

7. A cylindrical roller enveloping toroidal worm gear transmission device for machine tool processing according to claim 1, characterized in that, The outer circle and inner circle of the eccentric bushing (10) are not concentric.

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