Gear center hole punching device

Abstract

The utility model discloses a gear center hole tapping device, which relates to the technical field of gear processing, and comprises a workbench, a polishing mechanism and a fixing frame, the fixing frame is provided with a polishing cylinder, the two ends of the polishing cylinder are provided with sliding chutes, and a transverse plate and a first polishing block are arranged in the sliding chutes in a sliding manner; a first spring is fixedly arranged between the transverse plate and the first grinding block, a moving ring is further slidably arranged in the sliding groove, and two second grinding blocks are slidably arranged on the moving ring. A gear is punched through drilling equipment, a grinding cylinder stretches into a center hole to make a first grinding block abut against the upper side of the gear, two second grinding blocks are driven to stretch out of a movable ring in the downward moving process of a guide rod, and the guide rod abuts against a top plate to make the top plate drive an abutting ring to move upwards; and then the abutting ring drives the two extending second grinding blocks to abut against the lower wall of the center hole, so that the upper side and the lower side of the gear can be ground at the same time, and the deburring efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to gear machining technical field, concretely relates to a gear center hole trepanning device. BACKGROUND

[0002] Gear is a kind of toothed mechanical part that can mesh with each other, has the extensive application in mechanical transmission and power transmission, generally consists of gear tooth, wheel hub, spoke etc.Part.Gear tooth is the protruding part on gear, is the part directly involved in meshing transmission;Wheel hub is the part of gear center and shaft cooperation, is used to install and support gear;Spoke connects wheel hub and rim, plays the role of support and force transmission;

[0003] The center hole of gear is the hole at the position of gear axis, in the gear machining process, center hole is used as positioning reference, can guarantee the machining accuracy of gear profile, tooth direction etc., makes the accurate positional relationship of each part size relative to center hole, helps to improve the consistency and accuracy of machining, and has the role of assembly reference and measurement reference.

[0004] In gear production and processing, gear center hole needs to be opened, burrs are generated on both sides of gear in the opening process, to ensure gear quality, the burrs on both sides of gear center hole need to be polished, the existing gear center hole burr polishing needs to clamp gear first, then polish the burrs on one side, then loosen gear, reverse and clamp again, then polish the other side, and the polishing steps are complicated, resulting in low gear center hole opening efficiency. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a gear center hole trepanning device to solve the above-mentioned deficiencies in prior art.

[0006] In order to realize the above-mentioned purpose, the utility model provides the following technical scheme: a gear center hole trepanning device, including workbench, the workbench is fixedly provided with support frame, the support frame is fixedly provided with drilling device on it, the workbench is slidably provided with moving plate;Polishing mechanism, including the fixed frame fixedly arranged on workbench, the fixed frame is rotatably provided with polishing cylinder, the polishing cylinder both ends are provided with sliding slot, the sliding slot is slidably provided with horizontal plate and first polishing block, the first spring is fixedly arranged between horizontal plate and first polishing block, the sliding slot is also slidably provided with moving ring, the moving ring is slidably provided with two second polishing blocks on it.

[0007] As preferred, the moving plate is fixedly provided with support ring, the support ring is provided with recess, the moving plate is fixedly provided with two fixed plates, each fixed plate is fixedly provided with air cylinder, and each air cylinder is fixedly provided with clamping plate close to the end of support ring.

[0008] As preferred, a hydraulic cylinder is fixedly arranged on the fixing frame, a servo motor is fixedly arranged at the bottom of the hydraulic cylinder, telescopic rods are fixedly arranged on both sides of the servo motor, a connecting rod is fixedly arranged at the output end of the servo motor, and the end of the connecting rod away from the servo motor is fixedly connected with the horizontal plate.

[0009] As preferred, a disc is fixedly arranged at the end of the horizontal plate away from the connecting rod, two guide rods are fixedly arranged on the disc, and a circular ring is fixedly arranged on each second polishing block.

[0010] As preferred, two top plates are rotatably arranged in the polishing cylinder, a second spring is fixedly arranged at the bottom of the moving ring, an abutting ring is fixedly arranged at the bottom of the second spring, and two top rods are fixedly arranged on the abutting ring.

[0011] As preferred, torsional springs are fixedly arranged between the two sides of each top plate and the polishing cylinder.

[0012] In the above technical solution, the gear center hole opening device has the following beneficial effects: the gear is punched by the drilling equipment, the first polishing block is abutted with the upper side of the gear by the polishing cylinder extending into the center hole, the two second polishing blocks are extended out of the moving ring by the guide rods moving downward, the top plates drive the abutting ring to move upward by the abutment of the guide rods and the top plates, and then the abutting ring drives the two second polishing blocks extended out to abut with the lower wall of the center hole, so that the gear can be polished on both sides at the same time, and the deburring efficiency is increased. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art according to these drawings.

[0014] Figure 1 The overall structure schematic view provided by the embodiment of the present application is shown in the figure.

[0015] Figure 2 The structure schematic view of the moving plate provided by the embodiment of the present application is shown in the figure.

[0016] Figure 3 The structure schematic view of the clamping plate provided by the embodiment of the present application is shown in the figure.

[0017] Figure 4 The structure schematic view of the polishing cylinder provided by the embodiment of the present application is shown in the figure.

[0018] Figure 5 A structure schematic view of a horizontal plate provided by the embodiment of the utility model;

[0019] Figure 6 A structure schematic view of a supporting ring provided by the embodiment of the utility model;

[0020] Figure 7 A structure schematic view of a supporting ring provided by the embodiment of the utility model; Figure 6 An enlarged view of the structure at A in the middle;

[0021] Figure 8 A structure schematic view of a guiding rod provided by the embodiment of the utility model.

[0022] Mark explanation:

[0023] 1, workbench;2, support frame;3, drilling device;4, fixing frame;5, hydraulic cylinder;6, telescopic rod;7, servo motor;8, connecting rod;10, moving plate;11, fixed plate;12, air cylinder;13, clamping plate;14, supporting ring;141, recess;15, gear;16, polishing cylinder;21, sliding groove;22, horizontal plate;23, first polishing block;24, first spring;25, connecting ring;26, disc;27, guiding rod;28, moving ring;29, second polishing block;30, circular ring;31, abutting ring;32, second spring;33, jacking rod;34, top plate;35, torsional spring. Specific implementation

[0024] In order to make the technical personnel in the field better understand the technical scheme of the utility model, the utility model will be further introduced in detail below in combination with the drawings.

[0025] Please refer to Figures 1-8The utility model provides a gear center hole trepanning device, the technical scheme provided by the utility model comprises a workbench 1, the workbench 1 is fixedly provided with a support frame 2, the support frame 2 is fixedly provided with a drilling device 3, the workbench 1 is slidably provided with a moving plate 10, a polishing mechanism, it includes the fixed frame 4 of fixed setting in the workbench 1, the polishing cylinder 16 of rotationally being provided with in the fixed frame 4, the both ends of polishing cylinder 16 are all provided with the sliding slot 21, the sliding slot 21 is slidably provided with the transverse plate 22 and first polishing block 23, the first spring 24 of fixedly being provided with between the transverse plate 22 and first polishing block 23, the sliding slot 21 is still slidably provided with the moving ring 28, the two second polishing blocks 29 of slidingly being provided with on the moving ring 28, the first spring 24 lower part is fixedly provided with the connecting ring 25, the connecting ring 25 is fixedly connected with first polishing block 23, the drilling device 3 on the support frame 2 is prior art, the moving plate 10 is used to place gear 15, when using, first moving plate 10 is moved to the support frame 2 below, at this time, the gear 15 on moving plate 10 is trepanned by drilling device 3, after trepanning, moving plate 10 is moved to the fixed frame 4 directly below, at this time, the transverse plate 22 is moved downward, the polishing cylinder 16 is made into the center hole that trepanned by the transverse plate 22, when the polishing cylinder 16 is made into the center hole, continue to move the polishing cylinder 16 downward, when the polishing cylinder 16 moves downward, the two first polishing blocks 23 are made to abut with the upper side of gear 15 center hole by the first spring 24, at this time, the moving ring 28 is moved up, to make the second polishing block 29 abut with the lower side of gear 15 center hole, at this time, the polishing cylinder 16 is rotated, the polishing cylinder 16 drives the two first polishing blocks 23 and the two second polishing blocks 29 to rotate, to polish the upper and lower sides of gear 15 center hole simultaneously, greatly increase deburring efficiency.

[0026] Specifically, the moving plate 10 is fixedly provided with a support ring 14, the support ring 14 is provided with a groove 141, the moving plate 10 is fixedly provided with two fixed plates 11, each fixed plate 11 is fixedly provided with a pneumatic cylinder 12, and each pneumatic cylinder 12 is fixedly provided with a clamping plate 13 at one end close to the support ring 14; the support ring 14 is used to place the gear 15, when the polishing cylinder 16 passes through the center hole, the groove 141 can be used for the movement of the polishing cylinder 16, when the center hole of the gear 15 needs to be punched, the gear 15 is first placed on the support ring 14, then the ends of the two pneumatic cylinders 12 are moved to clamp the gear 15 through the clamping plate 13, so that the gear 15 can be kept stable when the gear 15 is punched and deburred.

[0027] Specific, fixed frame 4 is fixedly provided with hydraulic cylinder 5, the bottom of hydraulic cylinder 5 is fixedly provided with servo motor 7, the both sides of servo motor 7 are fixedly provided with telescopic rod 6, the output end of servo motor 7 is fixedly provided with connecting rod 8, the end of connecting rod 8 away from servo motor 7 is fixedly connected with horizontal plate 22;Hydraulic cylinder 5 is used to control servo motor 7 to lift, horizontal plate 22 can only move up and down along polishing barrel 16, through telescopic rod 6, servo motor 7 can be kept stable when hydraulic cylinder 5 drives servo motor 7 to lift, when polishing barrel 16 extends into the central hole of gear 15, polishing barrel 16 is rotated through servo motor 7, thereby the burrs on both sides of the central hole are polished, connecting rod 8 is rotated through servo motor 7, connecting rod 8 drives horizontal plate 22 to rotate, horizontal plate 22 drives polishing barrel 16 to rotate.

[0028] Specific, the end of horizontal plate 22 away from connecting rod 8 is fixedly provided with disc 26, two guide rods 27 are fixedly provided on disc 26, each second polishing block 29 is fixedly provided with circular ring 30, each circular ring 30 is slidably connected with each guide rod 27 one by one;Each guide rod 27 is provided as Z-shaped, in the initial state, the outer side wall of two second polishing blocks 29 is in the moving ring 28, thereby when polishing barrel 16 extends into the central hole, interference will not be generated, when polishing barrel 16 extends into the central hole, the upper side of the central hole of two first polishing blocks 23 abuts, at this time, connecting rod 8 is driven to move down through hydraulic cylinder 5, horizontal plate 22 is driven to move down through connecting rod 8, first spring 24 is compressed when horizontal plate 22 moves down, at this time, each first polishing block is closely abutted with the upper wall of gear 15, connecting rod 8 drives disc 26 to move down when moving down, disc 26 drives each guide rod 27 to move down, circular ring 30 moves along the track of guide rod 27 when guide rod 27 moves down, thereby second polishing block 29 extends out of moving ring 28 and abuts with the bottom of gear 15 when guide rod 27 moves down, at this time, second polishing block 29 and first polishing block 23 abut with the upper and lower sides of the central hole of gear 15 respectively, thereby when polishing barrel 16 rotates, the upper and lower sides of the central hole of gear 15 can be polished at the same time.

[0029] Specific, two top plates 34 are rotatably provided in polishing barrel 16, second spring 32 is fixedly provided at the bottom of moving ring 28, second spring 32 is fixedly provided with abutting ring 31 at the bottom, two top rods 33 are fixedly provided on abutting ring 31;When disc 26 drives guide rod 27 to move down, second polishing block 29 is extended out when guide rod 27 moves down, in the initial state, the side of two top plates 34 close to guide rod 27 faces upward, guide rod 27 abuts with top plate 34 and drives top plate 34 to rotate when moving down, the end of top plate 34 away from guide rod 27 is lifted, thereby abutting with top rod 33, top rod 33 lifts abutting ring 31, abutting ring 31 lifts moving ring 28, thereby two second polishing blocks 29 abut with the bottom of the central hole of gear 15, thereby the upper and lower sides of the central hole are polished.

[0030] Specifically, each top plate 34 is fixedly provided with a torsion spring 35 between both sides and the polishing barrel 16; when the guide rod 27 moves downward, the top plate 34 is lifted to lift the moving ring 28, and when the hydraulic cylinder 5 drives the disc 26 to move upward, the top plate 34 is reset through the torsion spring 35.

[0031] Although the embodiments of the present application have been shown and described, it should be understood by those ordinary skilled in the art that various changes, modifications, replacements and modifications can be made to these embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A gear center hole opening device, comprising a worktable (1), characterized in that, A support frame (2) is fixedly installed on the workbench (1), a drilling device (3) is fixedly installed on the support frame (2), and a movable plate (10) is slidably installed on the workbench (1). The grinding mechanism includes a fixed frame (4) fixedly mounted on a workbench (1), a grinding cylinder (16) rotatably mounted on the fixed frame (4), and a sliding groove (21) provided at both ends of the grinding cylinder (16). A horizontal plate (22) and a first grinding block (23) are slidably mounted in the sliding groove (21), and a first spring (24) is fixedly mounted between the horizontal plate (22) and the first grinding block (23). A moving ring (28) is also slidably mounted in the sliding groove (21), and two second grinding blocks (29) are slidably mounted on the moving ring (28).

2. The gear center hole opening device according to claim 1, characterized in that, A support ring (14) is fixedly provided on the movable plate (10). A groove (141) is provided on the support ring (14). Two fixed plates (11) are fixedly provided on the movable plate (10). A cylinder (12) is fixedly provided on each fixed plate (11). A clamping plate (13) is fixedly provided at one end of each cylinder (12) near the support ring (14).

3. The gear center hole opening device according to claim 2, characterized in that, A hydraulic cylinder (5) is fixedly installed on the fixed frame (4). A servo motor (7) is fixedly installed at the bottom of the hydraulic cylinder (5). Telescopic rods (6) are fixedly installed on both sides of the servo motor (7). A connecting rod (8) is fixedly installed at the output end of the servo motor (7). The end of the connecting rod (8) away from the servo motor (7) is fixedly connected to the horizontal plate (22).

4. The gear center hole opening device according to claim 3, characterized in that, A disc (26) is fixedly installed at the end of the horizontal plate (22) away from the connecting rod (8). Two guide rods (27) are fixedly installed on the disc (26). A ring (30) is fixedly installed on each of the second grinding blocks (29). Each ring (30) is slidably connected to each guide rod (27) in a one-to-one correspondence.

5. A gear center hole opening device according to claim 4, characterized in that, The grinding cylinder (16) has two top plates (34) rotatably mounted inside. The bottom of the moving ring (28) is fixedly mounted with a second spring (32). The bottom of the second spring (32) is fixedly mounted with an abutment ring (31). The abutment ring (31) is fixedly mounted with two push rods (33).

6. A gear center hole opening device according to claim 5, characterized in that, Each of the top plates (34) is fixedly provided with a torsion spring (35) between its two sides and the grinding cylinder (16).

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