Tooth part preprocessing positioning boss structure

Abstract

The utility model discloses a tooth part pre-machining positioning boss structure, and relates to the technical field of gear machining equipment, the tooth part pre-machining positioning boss structure comprises a workbench, and a center column is arranged on the top surface of the workbench; sliding grooves are formed in the positions, located on the two sides of the workbench, of the top face of the workbench, sliding blocks are arranged in the sliding grooves in a sliding mode, side grooves are formed in the inner walls of the two sides of the sliding grooves, side blocks are arranged on the two sides of the sliding blocks, and the sliding blocks are provided with clamping plates. A driving part is arranged in the workbench, a moving plate is arranged at the output end of the driving part and rotationally provided with a plurality of connecting rods, and the ends, away from the moving plate, of the connecting rods are rotationally connected with the sliding blocks; a plurality of through holes are formed in the top surface of the workbench; the movable plate is provided with an ejector rod; when the gear is machined, the driving piece drives the sliding block to slide in the sliding groove, and therefore the gear is fixed through the clamping plate. After machining is completed, the gear can be loosened through reverse operation; after the clamping plate is loosened, the ejector rod can penetrate through the through hole to jack up the gear, a worker does not need to dismount the gear through tools such as a crowbar, the operation process is simplified, and the gear dismounting efficiency is remarkably improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of gear machining equipment, in particular to a tooth part pre-machining positioning boss structure. BACKGROUND

[0002] In the field of modern mechanical manufacturing, gears as important transmission components, its machining precision directly affects the transmission efficiency and service life of mechanical equipment. Tooth part pre-machining is a key link in the process of gear manufacturing, positioning boss fixes the gear, so that the tooth part machining tool can cut according to the predetermined trajectory, thereby ensuring that the key parameters such as tooth shape and tooth direction meet the design requirements.

[0003] At present, the widely used tooth part pre-machining positioning boss structure adopts the mode of center column cooperating with clamping mechanism to fix the gear. Specifically, the center of the positioning boss is provided with a center column matched with the inner hole of the gear, so as to realize the preliminary positioning of the gear in the radial direction. At the same time, the clamping mechanism is arranged on the periphery of the positioning boss, and uniform clamping force is applied to the outer peripheral surface of the gear, so as to further ensure the stability of the gear in the machining process.

[0004] For the above-mentioned related technology, the inventor believes that after the tooth part pre-machining of the gear is completed, because the cooperation between the center column and the inner hole of the gear is relatively close, the worker often needs to use additional tools such as crowbar when taking out the machined gear, and separates the gear from the center column by prying and other methods, which is not only cumbersome but also low in efficiency. CONTENT OF THE INVENTION

[0005] The purpose of the present application is to provide a tooth part pre-machining positioning boss structure to improve the problem that the worker often needs to use additional tools such as crowbar, rubber hammer, etc. when taking out the machined gear, and separates the gear from the center column by knocking, prying and other methods, which is not only cumbersome but also low in efficiency.

[0006] The present application provides a tooth part pre-machining positioning boss structure, which adopts the following technical scheme:

[0007] A tooth part pre-machining positioning boss structure, comprising a workbench, the top surface of the workbench is provided with a center column for inserting a positioning gear; the top surface of the workbench is provided with a sliding groove on both sides of the workbench, the sliding groove is provided with a sliding block inside, the inner wall of the sliding groove is provided with a side groove along the length direction of the sliding groove, the sliding block is provided with a side block corresponding to the side groove on both sides, and the side of the sliding block close to the center column is provided with a clamping plate; the workbench is provided with a driving member inside, the output end of the driving member is provided with a moving plate, the moving plate is provided with a plurality of connecting rods which are rotationally connected with the sliding block at one end away from the moving plate; a plurality of through holes are provided on the circumference of the center column on the top surface of the workbench, and the moving plate is provided with a plurality of ejection rods corresponding to the through holes, which can eject the gear.

[0008] By adopting the technical scheme, when the gear is machined, the driving member drives the moving plate to move, the sliding block is made to slide in the sliding groove through the connecting rod, so that the clamping plate fixes the gear; after the machining is completed, the gear can be loosened by reverse operation; meanwhile, the through holes arranged around the circumference of the center column cooperate with the ejection rod on the moving plate, after the clamping plate is loosened, the ejection rod can pass through the through holes to lift the gear, without the need of workers to use a crowbar or the like to disassemble, the operation process is simplified, and the gear dismounting efficiency is significantly improved.

[0009] Optionally, the top surface of the workbench is provided with a threaded rod, and the center column is in threaded connection with the threaded rod.

[0010] By adopting the technical scheme, when gears of different specifications need to be machined, the center column only needs to be screwed off and replaced with an appropriate model, thereby improving the universality of the positioning boss structure.

[0011] Optionally, the outer side wall of the center column is provided with a plurality of protruding strips in the up-down direction.

[0012] By adopting the technical scheme, when the gear is installed on the center column, the protruding strips can make the gear be positioned more stably, reduce the radial displacement of the gear in the machining process due to cutting force and other factors, further guarantee the precision of the gear part pre-machining, and improve the product qualification rate.

[0013] Optionally, the length of the ejection rod is greater than the length of the center column.

[0014] By adopting the technical scheme, it is ensured that the ejection rod can smoothly lift the gear completely from the center column during work, and the automatic disengagement of the gear can be realized.

[0015] Optionally, the top surface of the ejection rod is provided with an elastic top head.

[0016] By adopting the technical scheme, the elastic top head can be elastically deformed when contacting the gear during the ejection of the gear, the ejection force is dispersed, and it is helpful to prevent the ejection rod from causing scratches, indentations and other damages to the surface of the gear.

[0017] Optionally, the elastic top head is provided with a mounting block, and the top surface of the ejection rod is provided with a mounting groove corresponding to the mounting block.

[0018] By adopting the technical scheme, the elastic top head is connected with the mounting groove in the top surface of the ejection rod through the mounting block, which facilitates the installation and replacement of the elastic top head, reduces the maintenance cost and difficulty, and improves the service life and reliability of the equipment.

[0019] Optionally, the side of the clamping plate close to the center column is provided with an elastic pad.

[0020] By adopting the above technical scheme, when the clamping plate clamps the gear, the elastic pad will be elastically deformed due to stress, avoiding rigid extrusion of the gear surface by the clamping plate, which helps to prevent leaving clamping marks on the gear surface and protect the appearance and precision of the gear.

[0021] Optionally, the elastic pad is provided with a plurality of anti-skid strips.

[0022] By adopting the above technical scheme, in the gear machining process, strong cutting force may cause the gear to rotate slightly or displace, the anti-skid strips increase the friction force between the elastic pad and the outer circumferential surface of the gear, further enhancing the stability of clamping and improving the quality and precision of the gear part pre-machining.

[0023] Optionally, the side groove is rotatably provided with a plurality of balls matched with the side block along the length direction of the side groove.

[0024] By adopting the above technical scheme, in the process of moving the slider by the driving member, the rolling friction of the ball is smaller than the traditional sliding friction, so that the sliding of the slider is more smooth and flexible, the load of the driving member is reduced, the wear of the mechanical parts is reduced, and the transmission efficiency and service life of the whole positioning boss structure are improved.

[0025] In summary, the present application has the following beneficial technical effects of at least one gear part pre-machining positioning boss structure:

[0026] 1. In the gear machining, the driving member drives the moving plate to move, the slider in the sliding groove is slid through the connecting rod, so that the clamping plate fixes the gear; after machining, reverse operation can release the gear; at the same time, the through holes around the center column are circumferentially arranged, and the ejector rod on the moving plate is matched with the through holes, so that the ejector rod can pass through the through holes to lift the gear after the clamping plate is released, without the need for workers to use tools such as crowbars to disassemble, simplifying the operation process and significantly improving the gear disassembly efficiency.

[0027] 2. In the process of ejecting the gear, the elastic head can be elastically deformed when contacting the gear, dispersing the ejecting force, which helps to prevent the ejector rod from causing scratches, indentations and other damages to the gear surface;

[0028] 3. In the process of moving the slider by the driving member, the rolling friction of the ball is smaller than the traditional sliding friction, so that the sliding of the slider is more smooth and flexible, the load of the driving member is reduced, the wear of the mechanical parts is reduced, and the transmission efficiency and service life of the whole positioning boss structure are improved. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 is a schematic diagram of the overall structure of the gear part pre-machining positioning boss structure;

[0030] Figure 2 is a schematic diagram of the cross section for embodying the overall structure.

[0031] Figure 3 is a schematic diagram for embodying the ejection rod structure in the embodiment;

[0032] Figure 4 is a schematic diagram for embodying the ball structure in the embodiment.

[0033] In the figure, 1, workbench; 11, through hole; 12, cabinet door; 2, center column; 21, threaded rod; 22, protruding strip; 3, sliding groove; 31, side groove; 4, sliding block; 41, side block; 5, clamping plate; 51, elastic pad; 511, anti-skid strip; 6, driving piece; 61, moving plate; 62, connecting rod; 7, ejection rod; 71, elastic top head; 711, mounting block; 72, mounting groove; 8, ball. DETAILED DESCRIPTION

[0034] The following will be described in detail in combination with the accompanying Figure 1 - the accompanying Figure 4 , this application is further described in detail.

[0035] A tooth part pre-machining positioning boss structure, referring to Figure 1 、 Figure 4 , including a workbench 1, the workbench 1 is built-in cavity, and the workbench 1 side is provided with a cabinet door 12; a center column 2 for inserting a positioning gear is vertically arranged at the center position of the top surface of the workbench 1, and a threaded rod 21 is arranged on the top surface of the workbench 1; an inner threaded hole matched with the threaded rod 21 is formed at the bottom of the center column 2, and the center column 2 and the threaded rod 21 are connected by threads; this connection mode is convenient for replacing the matched center column 2 according to different gear inner diameters; a plurality of protruding strips 22 are arranged on the outer side wall of the center column 2 in the up-down direction, which can increase the friction with the gear inner hole.

[0036] Referring to Figure 1 、 Figure 3 , a sliding groove 3 is symmetrically arranged through the top surface of the workbench 1 at both sides, and a sliding block 4 is slidably arranged in the sliding groove 3; good sliding fit is required between the sliding block 4 and the inner wall of the sliding groove 3. Specifically, side grooves 31 are arranged on the inner walls of the sliding groove 3 along the length direction, and side blocks 41 are integrally fixed on the both sides of the sliding block 4 corresponding to the side grooves 31; a plurality of balls 8 are connected to the side blocks 41 by fitting connection along the length direction of the side grooves 31; the arrangement of the balls 8 can greatly reduce the friction when the sliding block 4 slides, so that the sliding of the sliding block 4 is more smooth.

[0037] Referring to Figure 1 、 Figure 2The clamping plate 5 is fixedly connected with the slider 4 on the side close to the center column 2 through a bolt, and is made of a metal material with moderate hardness. The clamping plate 5 is fixedly connected with an elastic pad 51 on the side close to the center column 2, and the elastic pad 51 is usually made of an elastic material such as rubber, and can play a buffering role when clamping the gear; the surface of the elastic pad 51 is provided with a plurality of anti-skid strips 511, which increase the friction force with the outer circumferential surface of the gear and improve the reliability of clamping.

[0038] With reference to Figure 2 Inside the workbench 1, a driving member 6 is arranged, which can be a hydraulic cylinder. The output end of the driving member 6 is fixedly connected with a moving plate 61 through a flange plate. The moving plate 61 is used to transmit the power of the driving member 6 to the slider 4. A plurality of connecting rods 62 are rotatably arranged on the moving plate 61 through a pin shaft, and the number of the connecting rods 62 is preferably two in the embodiment. The connecting rods 62 are rotatably connected with the slider 4 through a pin shaft at the end away from the moving plate 61. The moving plate 61 is driven to move by the driving member 6, and then drives the connecting rods 62 to move, so that the slider 4 slides in the sliding groove 3, and the clamping plate 5 clamps and loosens the gear.

[0039] With reference to Figure 1 , Figure 3 A plurality of through holes 11 are arranged on the top surface of the workbench 1 around the circumference of the center column 2, and the number of the through holes 11 is preferably four in the embodiment, and more through holes 11 can be arranged according to actual needs. The through holes 11 are used for the ejection rod 7 to pass through. The moving plate 61 is fixedly provided with a plurality of ejection rods 7 capable of ejecting the gear through welding corresponding to the through holes 11. The length of the ejection rod 7 is greater than the length of the center column 2, so as to ensure that the gear can be ejected from the center column 2. An elastic top head 71 is arranged on the top surface of the ejection rod 7, and the elastic top head 71 is made of an elastic material such as rubber, which can reduce damage to the surface of the gear when the gear is ejected. An installation block 711 is arranged at the bottom of the elastic top head 71, and an installation groove 72 is arranged on the top surface of the ejection rod 7 corresponding to the installation block 711. The installation block 711 and the installation groove 72 are connected through interference fit, which facilitates the installation and replacement of the elastic top head 71.

[0040] The implementation principle of the embodiment of the application is as follows:

[0041] In actual use, first, according to the inner diameter of the gear to be processed, the center column 2 is selected and installed on the top surface of the workbench 1 through threaded connection, and the outer side protruding strip 22 of the center column 2 is used to increase the friction with the gear hole to complete the initial positioning in the radial direction; when processing is fixed, the driving part 6 is started, the moving plate 61 is driven to move downward to make the connecting rod 62 rotate, the sliding block 4 is pushed to slide in the sliding groove 3, the sliding block 4 drives the clamping plate 5, and the stable clamping of the gear is realized through the cooperation of the elastic pad 51 and the anti-skid strip 511 with the center column 2; when disassembling, the driving part 6 is started again to make the moving plate 61 move upward to loosen the clamping plate 5, and the moving plate 61 is continuously moved upward to make the ejector rod 7 on the moving plate 61 pass through the through hole 11, and the gear is lifted by the elastic top head 71; it is convenient for workers to take the gear, no additional tools are needed, damage is reduced, and operation is simple, convenient and efficient.

[0042] The embodiments of the specific implementation are the preferred embodiments of the present application, and are not limited to the protection scope of the present application, wherein the same parts are indicated by the same reference numerals. Therefore, equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A tooth pre-machining positioning boss structure, comprising a workbench (1), the top surface of the workbench (1) is provided with a center column (2) for inserting a positioning gear; characterized in that: The top surface of the workbench (1) is provided with a sliding groove (3) symmetrically arranged on both sides of the workbench (1), the sliding groove (3) is provided with a sliding block (4) slidingly arranged inside, the inner wall of the sliding groove (3) is provided with a side groove (31) along the length direction, the sliding block (4) is provided with a side block (41) corresponding to the side groove (31) on both sides, and the side of the sliding block (4) close to the center column (2) is provided with a clamping plate (5); the workbench (1) is provided with a driving member (6), the output end of the driving member (6) is provided with a moving plate (61), the moving plate (61) is rotatably provided with a plurality of connecting rods (62), and one end of the connecting rod (62) away from the moving plate (61) is rotatably connected with the sliding block (4); the top surface of the workbench (1) is provided with a plurality of through holes (11) arranged circumferentially around the center column (2), and the moving plate (61) is provided with a plurality of ejection rods (7) capable of ejecting gears corresponding to the through holes (11).

2. The pre-machined positioning boss structure of a tooth portion according to claim 1, characterized in that: The top surface of the workbench (1) is provided with a threaded rod (21), and the center column (2) is threadedly connected with the threaded rod (21).

3. A tooth pre-machining locating boss structure according to claim 2, characterized in that: The outer side wall of the center column (2) is provided with a plurality of protruding strips (22) in the up-down direction.

4. The pre-machined tooth locating boss structure of claim 3, wherein: The length of the ejection rod (7) is greater than the length of the center column (2).

5. A tooth pre-machining locating boss structure according to claim 4, wherein: The top surface of the ejection rod (7) is provided with an elastic top head (71).

6. A tooth pre-machining locating boss structure according to claim 5, wherein: The elastic top head (71) is provided with a mounting block (711), and the top surface of the ejection rod (7) is provided with a mounting groove (72) corresponding to the mounting block (711).

7. The tooth pre-machining locating boss structure of claim 1, wherein: The side of the clamping plate (5) close to the center column (2) is provided with an elastic pad (51).

8. A tooth pre-machining locating boss structure according to claim 7, characterized in that: The elastic pad (51) is provided with a plurality of anti-skid strips (511).

9. The tooth pre-machining locating boss structure of claim 1, wherein: The side groove (31) is rotatably provided with a plurality of balls (8) matched with the side block (41) along the length direction.

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