Vertical central speed change gear box mechanism

Abstract

The utility model discloses a vertical type central speed change gear box mechanism, relates to the technical field of gear boxes, and comprises a gear box main body, a rotating component, a protection mechanism and a sealing cover mechanism, the rotating component is arranged on the front surface of the gear box main body, the protection mechanism is arranged on the outer wall of the rotating component, and the protection mechanism is used for supporting the rotating component; the capping mechanism is arranged on the front face of the gearbox body. The protective mechanism is arranged on the outer wall of the rotating assembly in a sleeving mode, so that the rotating assembly exposed between the gear box body and the external main shaft is sleeved with the protective mechanism, the phenomenon that the rotating assembly moves during high-speed rotation can be avoided through supporting of the protective mechanism, and the working stability of the gear box is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to gear box technical field, in particular to a vertical center variable speed gear box mechanism. BACKGROUND

[0002] The vertical machining center is a common numerical control machine tool, the main shaft is vertical state, the cutter moves in the vertical direction, and the gear box is an important component in the mechanical transmission system of the vertical machining center.

[0003] The gear box is a device connecting the motor and the main shaft, and is mainly used for transmitting the power output by the motor to the main shaft, so that the main shaft can rotate and drive the cutter or workpiece to carry out cutting processing.

[0004] However, when the output shaft of the gear box is connected with the main shaft, part of the output shaft is in a bare state, so that when the output shaft rotates at high speed, the output shaft has a phenomenon of running due to the bare part of the output shaft, thereby reducing the stability of the gear box. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a vertical center variable speed gear box mechanism to solve the problems in the above background.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a vertical center variable speed gear box mechanism, comprising:

[0007] A gear box body;

[0008] A rotating assembly is arranged on the front face of the gear box body;

[0009] A protection mechanism is arranged on the outer wall of the rotating assembly, and the protection mechanism is used for supporting the rotating rotating assembly;

[0010] A cover mechanism is arranged on the front face of the gear box body.

[0011] Preferably, the rotating assembly comprises:

[0012] An output shaft is rotatably arranged on the front face of the gear box body;

[0013] A key is arranged on the end of the output shaft.

[0014] Preferably, the cover mechanism comprises:

[0015] A protective cover is arranged on the front face of the gear box body;

[0016] An installation bolt penetrates the front face of the protective cover and is threadedly connected with the front face of the gear box body.

[0017] Preferably, the protection mechanism comprises:

[0018] A support sleeve is arranged in the middle of the protection cover, and the support sleeve is sleeved on the outer wall of the output shaft.

[0019] An extrusion mechanism is arranged between the protection cover and the support sleeve.

[0020] A first contact mechanism is arranged on the front surface of the support sleeve.

[0021] A second contact mechanism is arranged on the inner wall of the support sleeve.

[0022] Preferably, the first contact mechanism comprises:

[0023] A second ball hole is arranged in an annular array on the front surface of the support sleeve.

[0024] A second rolling ball is movably arranged in the second ball hole.

[0025] Preferably, the second contact mechanism comprises:

[0026] A first ball hole is arranged on the inner wall of the support sleeve.

[0027] A first rolling ball is movably arranged in the first ball hole, and the outer wall of the first rolling ball is arranged in close contact with the outer wall of the output shaft.

[0028] Preferably, the extrusion mechanism comprises:

[0029] A fixed block is fixedly connected to the back surface of the protection cover.

[0030] A fixed rod is fixedly connected to the front surface of the fixed block.

[0031] A plug hole is arranged on the back surface of the support sleeve, and the outer wall of the fixed rod is movably and penetratingly connected with the inner wall of the plug hole.

[0032] A spring is arranged in the plug hole and located on the front surface of the fixed rod.

[0033] Preferably, the outer wall of the fixed block is provided with a third ball hole, a third rolling ball is movably arranged in the third ball hole, and the outer wall of the third rolling ball is arranged in close contact with the outer wall of the output shaft.

[0034] The technical effects and advantages of the utility model are as follows:

[0035] The utility model discloses a protection mechanism is set to the outer wall of rotating assembly, and the exposed rotating assembly between gear box main part and external main shaft is covered through the protection mechanism, can pass through the support of protection mechanism, avoids the phenomenon of the running of rotating assembly when high -speed rotation, thereby improved the stability of gear box work. BRIEF DESCRIPTION OF DRAWINGS

[0036] Fig. 1 It is the three-dimensional structure schematic diagram of the utility model.

[0037] Fig. 2 It is the support sleeve side sectional structure schematic diagram of the utility model.

[0038] In the drawing: 101, gear box main part;102, output shaft;103, protection cover;104, mounting bolt;201, support sleeve;301, first ball hole;302, first ball;401, second ball hole;402, second ball;501, fixed rod;502, insertion hole;503, spring;601, fixed block;701, third ball hole;702, third ball. DETAILED DESCRIPTION

[0039] The technical scheme in the embodiments of the utility model will be described clearly and completely below in combination with the drawings in the embodiments of the utility model, and apparently, 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 the person skilled in the art without making creative efforts are within the protection scope of the utility model.

[0040] The utility model provides a kind of vertical center gear box mechanism of variable speed as shown in Figs. 1-2

[0041] Embodiment one:

[0042] Including gear box main part 101, rotating assembly, protection mechanism and cover mechanism, rotating assembly is set to the front of gear box main part 101, protection mechanism is set to the outer wall of rotating assembly, protection mechanism is used to support rotating rotating assembly, cover mechanism is set to the front of gear box main part 101, protection mechanism is set to the outer wall of rotating assembly by protection mechanism, and the exposed rotating assembly between gear box main part 101 and external main shaft is covered through protection mechanism, can pass through the support of protection mechanism, avoids the phenomenon of the running of rotating assembly when high -speed rotation, thereby improved the stability of gear box work.

[0043] ​The rotating assembly comprises an output shaft 102 and a key, the output shaft 102 is arranged on the front surface of the gear box body 101, the key is arranged on the end of the output shaft 102, and the key is connected with the key groove of the main shaft, so that the torque of the output shaft 102 can be transmitted to the main shaft.

[0044] The cover mechanism comprises a protective cover 103 and a mounting bolt 104, the protective cover 103 is arranged on the front surface of the gear box body 101, the mounting bolt 104 penetrates the front surface of the protective cover 103 and is threadedly connected with the front surface of the gear box body 101, the gear box body 101 and the protective cover 103 are fixed through the mounting bolt 104, so that the gear box body 101 is covered, and the stability of the gear box is ensured.

[0045] The protective mechanism comprises a support sleeve 201, an extrusion mechanism, a first contact mechanism and a second contact mechanism, the support sleeve 201 is arranged in the middle of the protective cover 103, the support sleeve 201 is arranged on the outer wall of the output shaft 102, the extrusion mechanism is arranged between the protective cover 103 and the support sleeve 201, the first contact mechanism is arranged on the front surface of the support sleeve 201, and the second contact mechanism is arranged on the inner wall of the support sleeve 201. When the support sleeve 201 is arranged on the output shaft 102, the output shaft 102 can be supported by the support sleeve 201 during rotation, the phenomenon of movement of the output shaft 102 during high-speed rotation is avoided, and the stability of the gear box is improved.

[0046] The first contact mechanism comprises a second ball hole 401 and a second rolling ball 402, the second ball hole 401 is arranged in an annular array on the front surface of the support sleeve 201, and the second rolling ball 402 is movably clamped in the second ball hole 401. When the output shaft 102 is connected with the main shaft, the support sleeve 201 drives the second rolling ball 402 to abut against the main shaft, so that the operation of the protective mechanism is more smooth.

[0047] The second contact mechanism comprises a first ball hole 301 and a first rolling ball 302, the first ball hole 301 is arranged on the inner wall of the support sleeve 201, and the first rolling ball 302 is movably clamped in the first ball hole 301. The outer wall of the first rolling ball 302 is arranged in abutment with the outer wall of the output shaft 102. Through the arrangement of the first rolling ball 302, the first rolling ball 302 is driven to rotate when the output shaft 102 rotates, so that the friction generated when the output shaft 102 rotates is reduced.

[0048] The extrusion mechanism comprises a fixed block 601, a fixed rod 501, a bushing 502 and a spring 503, the fixed block 601 is fixedly connected to the back of the protective cover 103, the fixed rod 501 is fixedly connected to the front of the fixed block 601, the bushing 502 is arranged on the back of the support sleeve 201, the outer wall of the fixed rod 501 is movably inserted into the inner wall of the bushing 502, and the spring 503 is arranged in the bushing 502 and located on the front of the fixed rod 501; the fixed block 601 is used for positioning the fixed rod 501, the bushing 502 is used for positioning the spring 503, so that the spring 503 extrudes the inner wall of the bushing 502, the support sleeve 201 always has a tendency to move to the front, and when the output shaft 102 is connected with the main shaft, the support sleeve 201 can be more fitted to the main shaft, so that the support sleeve 201 can completely cover the exposed output shaft 102, and the supporting effect on the output shaft 102 is ensured.

[0049] Embodiment two:

[0050] Compared with the first embodiment, the outer wall of the fixed block 601 is provided with a third ball hole 701, the third ball hole 701 is movably provided with a third ball 702 in the inner portion, and the outer wall of the third ball 702 is fitted to the outer wall of the output shaft 102; through the arrangement of the third ball 702, when the output shaft 102 rotates, the third ball 702 is driven to rotate, so that the friction when the output shaft 102 rotates is reduced, and the stability of the gear box is improved.

[0051] Finally, it should be noted that: the above only for the preferred embodiments of the utility model, and does not limit the utility model, although the utility model has been described in detail with reference to the foregoing embodiments, for the person skilled in the art, it still can modify the technical scheme recorded in the foregoing each embodiment, or equivalent replacement to part of technical features, any modification, equivalent replacement, improvement etc. that is made within the spirit and principles of the utility model, should be included in the protection scope of the utility model.

Claims

1. A vertical center change gear box mechanism characterized by, The application relates to a gear box, which comprises the following parts: a gear box body (101); a rotating assembly arranged on the front face of the gear box body (101); a protection mechanism arranged on the outer wall of the rotating assembly, which is used for supporting the rotating rotating assembly; a cover mechanism arranged on the front face of the gear box body (101).

2. A vertical center transmission gearbox mechanism according to claim 1, characterized in that, The rotating assembly comprises: an output shaft (102) arranged on the front face of the gear box body (101); a key arranged on the end of the output shaft (102).

3. A vertical center transmission gearbox mechanism according to claim 2, characterized in that, The cover mechanism comprises: a protection cover (103) arranged on the front face of the gear box body (101); a mounting bolt (104) penetrating through the front face of the protection cover (103) and being screwed with the front face of the gear box body (101).

4. A vertical central gearbox mechanism according to claim 3, wherein The protection mechanism comprises: a supporting sleeve (201) penetratingly arranged in the middle part of the protection cover (103), which is sleeved on the outer wall of the output shaft (102); a pressing mechanism arranged between the protection cover (103) and the supporting sleeve (201); a first contact mechanism arranged on the front face of the supporting sleeve (201); a second contact mechanism arranged on the inner wall of the supporting sleeve (201).

5. A vertical central gearbox mechanism according to claim 4, wherein, The first contact mechanism comprises: a second ball hole (401) arranged in an annular array on the front face of the supporting sleeve (201); a second rolling ball (402) movably arranged in the second ball hole (401).

6. A vertical central gearbox mechanism according to claim 4, wherein, The second contact mechanism comprises: a first ball hole (301) arranged on the inner wall of the supporting sleeve (201); a first rolling ball (302) movably arranged in the first ball hole (301), and the outer wall of the first rolling ball (302) is arranged in close contact with the outer wall of the output shaft (102).

7. A vertical center transmission gearbox mechanism according to claim 4, characterized in that, The pressing mechanism comprises: a fixed block (601) fixedly connected to the back face of the protection cover (103); a fixed rod (501) fixedly connected to the front face of the fixed block (601); a plug hole (502) arranged on the back face of the supporting sleeve (201), and the outer wall of the fixed rod (501) is movably and penetratingly connected with the inner wall of the plug hole (502); a spring (503) arranged in the plug hole (502) and located on the front face of the fixed rod (501).

8. A vertical central gearbox mechanism according to claim 7, characterised in that, The outer wall of the fixed block (601) is provided with a third ball hole (701), and a third rolling ball (702) is movably arranged in the third ball hole (701), and the outer wall of the third rolling ball (702) is arranged in close contact with the outer wall of the output shaft (102).

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