CN115229634A

CN115229634A - Double-station direct grinding machine

Info

Publication number: CN115229634A
Application number: CN202210861294.1A
Authority: CN
Inventors: 熊南均
Original assignee: Jinhua Blue Standard Tool Technology Co ltd
Current assignee: Jinhua Blue Standard Tool Technology Co ltd
Priority date: 2022-07-20
Filing date: 2022-07-20
Publication date: 2022-10-25
Anticipated expiration: 2042-07-20
Also published as: CN115229634B

Abstract

The invention relates to a double-station straight grinding machine which is provided with two stations for mounting grinding tools of different types and comprises a machine body part and a machine head part, wherein the foremost end of the machine head part is a handle rod clamping head, the middle section of the machine head part is a central hole clamping station coaxially arranged with the handle rod clamping head, a power shaft in the machine body part is in power connection with the machine head part, the handle rod clamping head is mounted on a handle-type grinding tool, and the central hole grinding tool is mounted on the central hole clamping station. The grinding tool clamping device is additionally provided with a station for clamping a grinding tool in a center hole mounting mode at the rear part of the original clamping station, and the station has two working modes, namely, the station is fixedly rotated in situ, and the station is additionally slid in the axial direction outside the rotation, so that a user can select different grinding tools according to needs, different working modes are provided, the sliding function is provided, the hand action of the user can be reduced, the fatigue feeling is reduced, the multiple purposes are realized, and in addition, the speed reduction and the torque increase are realized by adopting a planet wheel speed reduction assembly.

Description

Double-station direct grinding machine

Technical Field

The invention belongs to the technical field of straight mills, and particularly relates to a straight mill with double stations.

Background

The straight grinding machine is designed to be used in a place with narrow space or a workpiece with a special shape or dense calandria, a handle rod clamping head of the straight grinding machine can only clamp a handle-type grinding tool, in view of safety factors, the size of the handle-type grinding tool is smaller than that of a grinding tool with a central hole installation mode, the handle-type grinding tool cannot be too large in force application, otherwise a handle part is easy to separate from the grinding tool and break, the grinding tool is clamped from two end faces in the central hole installation mode, the stability in rotating operation is far larger than that of the handle part in single-point clamping, the size of the grinding tool is relatively large, a certain force can be applied to improve the grinding amount, the central hole grinding tool is suitable for large grinding amount or rough machining, therefore, the grinding workpiece needs to carry various grinding tools, and the function of the straight grinding machine is increased while the lithium straight grinding machine which is designed to get rid of the constraint of wires of a user, and multiple works can be completed only by using one straight grinding machine in some times, so that the carrying and the arrangement of tools is reduced.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to solve the technical problem that a clamping station with a central hole installation mode is added in a straight grinding machine, and the clamping station and the original clamping station can be used simultaneously.

The invention aims to be realized by the following technical scheme: the utility model provides a duplex position is straight mill, has two stations of installation different grade type grinding apparatus, includes fuselage portion and nose portion, and the foremost end of nose portion is handle pole holding head, and the interlude of nose portion is the centre bore clamping station with the coaxial setting of handle pole holding head, and power shaft and nose portion in the fuselage portion are connected as power, install in handle pole holding head be handle formula grinding apparatus, install in centre bore clamping station be the centre bore grinding apparatus.

Preferably, the center hole clamping station comprises a speed reducing mechanism for providing power, a slidable clamping assembly connected with the speed reducing mechanism and a speed reducing box shell, wherein the speed reducing mechanism is used for installing the speed reducing mechanism, one end of the speed reducing mechanism is fixedly connected with the machine body part, and the other end of the speed reducing mechanism shell is a free end. The center hole clamping station is provided with a speed reduction and distance increase function, so that different grinding effects can be provided by the clamping head with the original handle rod at different rotating speeds.

Preferably, the speed reducing mechanism comprises a planetary speed reducing assembly, a central shaft of the planetary speed reducing assembly is rotatably sleeved on the peripheral surface of the power shaft, an inner gear ring of the planetary speed reducing assembly is fixed in a shell of the speed reducing box, the speed reducing mechanism further comprises an installation shaft, one end of the installation shaft is fixedly connected with a planet carrier of the installation shaft, the other end of the installation shaft is close to the power shaft, and an input end of the planetary speed reducing assembly is connected through a connecting sleeve sleeved on the peripheral surface of the power shaft. The planetary reduction mode structure is little, and spare part cooperation is stable, and convenient hierarchical the setting up.

Preferably, the clamping assembly capable of sliding comprises a spline shaft sleeve coaxially and fixedly arranged on the outer peripheral surface of the mounting shaft, a grinding tool clamping seat which is matched with splines on the outer peripheral surface of the spline shaft sleeve and can slide tightly and is provided with threads on the whole outer peripheral surface, a fastening nut which is matched with the threads of the grinding tool clamping seat and is used for fastening a grinding tool, a retaining nut fixedly arranged on the spline shaft sleeve, a top pressure spring arranged between the retaining nut and the grinding tool clamping seat, and a cylindrical cam which is in threaded connection with the outer periphery of the grinding tool clamping seat and is used for fastening the grinding tool together with the fastening nut. The spline shaft sleeve and the grinding tool clamping seat are matched to realize power transmission and relative sliding.

Preferably, the diameter and the thread type of the peripheral surface of one end, close to the handle rod clamping head, of the retaining nut are the same as those of the mounting seat, and the design enables the cylindrical cam to be connected between the retaining nut and the mounting seat during reversing connection, so that the jacking spring is disabled.

Preferably, one end of the shell of the reduction gearbox is a mounting surface connected with the machine body part, and the other end of the shell of the reduction gearbox is a cam contact roller matched with the cam of the cylindrical cam. The roller is adopted to be in contact fit with the cylindrical cam surface so as to increase the smoothness of the operation.

Preferably, the middle section of the shell of the reduction gearbox is a reduction mounting area; the inner gear rings are fixedly connected in the speed reduction mounting area, and the planet carrier can rotate to transmit speed reduction power. Planetary reduction has many advantages and low cost in an axial design.

In conclusion, compared with the prior art, the invention has the following advantages:

the grinding tool clamping device is additionally provided with a station for clamping a grinding tool in a center hole mounting mode at the rear part of the original clamping station, the station has two working modes, namely, the station is fixedly rotated in situ, and the station is additionally slid in the axial direction outside the rotation, so that a user can select different grinding tools according to needs, different working modes are provided, the sliding function can reduce the hand action of the user and reduce the fatigue feeling, the multipurpose of one machine is realized, the power of the direct grinding machine is used as the power for adding the functions, and the planetary gear speed reduction assembly is used for reducing the speed and increasing the moment.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of a holder for a grinding tool;

FIG. 3 is a schematic structural view of a head part of which a center hole clamping station can slide and rotate in a reciprocating manner within a certain axial range;

FIG. 4 is a schematic view of a structure of a head part with a center hole clamping station fixed in place for rotation;

FIG. 5 is a schematic view of a cylindrical cam;

FIG. 6 is a schematic structural view of a spline shaft sleeve;

fig. 7 is a schematic structural diagram of a combination of a mounting shaft and a power shaft.

The mark in the figure is:

the machine body part 01, the machine head part 02, the power shaft 03, the handle clamping head 100, the center hole clamping station 200, the speed reducing mechanism 210, the planetary speed reducing assembly 211, the mounting shaft 212, the connecting sleeve 213, the slidable clamping assembly 240, the spline shaft sleeve 241, the grinding tool clamping seat 242, the fastening nut 243, the retaining nut 244, the jacking spring 245, the cylindrical cam 246, the reduction box shell 220, the handle type grinding tool m1, the center hole grinding tool m2, the mounting surface 221, the cam contact roller 222 and the speed reducing mounting area 223.

Detailed Description

The invention will be further described with reference to examples of embodiments shown in the drawings to which:

example 1

As shown in fig. 1, the double-station straight mill is provided with two stations for mounting different types of grinding tools, one is a clamping handle type grinding tool, the other is a grinding tool clamping station clamped by a central hole, the two stations can be synchronously used or independently used, and the station clamped by the central hole can also slide along the axial direction in a reciprocating manner when rotating, so that the back-and-forth movement of hands is reduced, and the hand fatigue is relieved; the special structure comprises a machine body part 01 and a machine head part 02, wherein a power shaft 03 in the machine body part 01 is in power connection with the machine head part 02, the foremost end of the machine head part 02 is a handle rod clamping head 100, and the middle section of the machine head part 02 is a central hole clamping station 200 which is coaxially arranged with the handle rod clamping head 100; in fig. 1, a shank type grinding tool m1 is mounted on the shank clamping head 100, a central hole grinding tool m2 is mounted on the central hole clamping station 200, the shank clamping head 100 outputs the rotation speed of the original straight grinding machine, the central hole clamping station 200 outputs the rotation speed after the speed reduction, and the rotation speeds of the shank type grinding tool m1 and the central hole clamping station 200 are different from each other, so that the shank type grinding tool can be selected according to product characteristics.

As shown in fig. 3-4, the center hole clamping station 200 has two modes of actions: the first type is fixed in the in-situ rotation mode, the other type is capable of sliding in a reciprocating mode and rotating in a certain axial range, the second type of action mode is provided with the combination of synchronous actions in the two directions of sliding in the reciprocating mode and rotating, therefore, the grinding or polishing area can be increased, and meanwhile, the acted workpiece surface can obtain more uniform treatment effect;

the speed reducing mechanism 210 comprises a planetary speed reducing component 211, a central shaft of the planetary speed reducing component 211 is rotatably sleeved on the peripheral surface of the power shaft 03, an inner gear ring of the planetary speed reducing component 211 is fixed in a reduction gearbox shell 220, one end of the planetary speed reducing component 211 is fixedly connected with a planet carrier of the planetary speed reducing component, the other end of the planetary speed reducing component is close to a mounting shaft 212 of the handle rod clamping head 100, and the input end of the planetary speed reducing component 211 is connected through a connecting sleeve 213 sleeved on the peripheral surface of the power shaft 03; when the power transmission device is used, power is transmitted to the planet wheel by the power shaft 03 through the connecting sleeve 213, speed reduction is realized, and the power is transmitted to the mounting shaft 212 by the planet carrier, so that the speed reduction and torque increase effects are obtained.

The slidable clamping assembly 240 comprises a spline shaft sleeve 241 coaxially and fixedly arranged on the outer peripheral surface of the mounting shaft 212, a grinding tool clamping seat 242 which is matched with the spline on the outer peripheral surface of the spline shaft sleeve 241 and can slide tightly and is provided with threads on the whole outer peripheral surface, a fastening nut 243 which is matched with the threads of the grinding tool clamping seat 242 and is used for fastening a grinding tool, a retaining nut 244 which is fixedly arranged on one end of the spline shaft sleeve 241, close to the handle bar clamping head 100, of which the outer peripheral surface has the same diameter and the same thread type as those of the mounting seat 242, a top pressure spring 245 arranged between the retaining nut 244 and the grinding tool clamping seat 242, and a cylindrical cam 246 which is in threaded connection with the outer periphery of the grinding tool clamping seat 242 and is used for fastening a grinding tool together with the fastening nut 243; the convex or concave size of the cylindrical cam 246 is the same at the same diameter position, so that the cylindrical cam 246 is contacted with the symmetrical cam contact roller up and down at the same time when rotating, and the sliding stability when rotating is increased, wherein the cylindrical cam 246 plays two roles, on one hand, the cylindrical cam 246 is matched with the fastening nut 243 to clamp and fix the central hole grinding tool m2 to play a fastening role, on the other hand, the cylindrical cam plays a role of a cam, and the rotation around the axial direction is converted into linear movement along the axial direction; here the outer diameter of the pressure spring 245 needs to be smaller than the diameter of the retaining nut 244 so as to be able to be covered by the cylindrical cam 246.

As shown in fig. 5, one end of the reduction gearbox housing 220 is a mounting surface 221 connected with the body part 01, the other end is a cam contact roller 222 matched with the cam of the cylindrical cam 246, and the middle section of the reduction gearbox housing 220 is divided into a reduction mounting area 223; the inner gear ring is fixedly connected in the speed reduction mounting area 223, and the planet carrier can rotate to transmit speed reduction power;

as shown in fig. 1-7, in operation, the reduction gearbox housing 220 is fixed to the machine body part 01, the cylindrical cam 246 rotates and is in contact fit with the cam contact roller 222 all the time under the action of the top pressure spring 245, so that the cylindrical cam 246 slides in the axial direction, and the grinding tool clamping seat 242 is pushed to slide in a reciprocating manner along the axial direction of the spline shaft sleeve 241, that is, a central hole grinding tool m2 installed on the grinding tool clamping seat 242 rotates and has a reciprocating sliding action.

When the center hole clamping station 200 is used for clamping, firstly, the cam end of the cylindrical cam 246 is screwed in along the outer periphery of the grinding tool clamping seat 242 towards the body part direction, the position is adjusted, the position is locked, the grinding tool is sleeved on the outer shaft of the grinding tool clamping seat 242 along the same way and is attached to the plane end of the cylindrical cam 246, the fastening nut 243 is screwed in along the outer periphery of the grinding tool clamping seat 242 along the same way, the fastening nut is screwed in place, and the grinding tool is clamped and fixed. As mentioned above, the central hole clamping station 200 can provide two operation modes, the above-described operation mode is a "sliding and rotating in a certain range in an axial direction", if the assembling positions of the cylindrical cam 246 and the fastening nut 243 are rotated and translated by 180 degrees, the assembling sequence is interchanged, and as shown in fig. 4, the operation mode is a "fixed in-situ rotation" mode, which is based on the principle that the cylindrical cam 246 is used for connecting the mounting seat 242 and the retaining nut 244 together by screw threads, and the pressing spring 245 in the middle after connection is failed, i.e., the operation mode is "fixed in-situ rotation".

When in use: if the operation is carried out by adopting a mode of reciprocating sliding and rotating within a certain range in the axial direction, an operator firstly screws the cylindrical cam 246 in place, the cam end faces inwards, then screws the grinding tool m2 in the central hole, screws the fastening nut 243 for locking, prepares for work, toggles a starting switch of the straight grinding machine, rotates the power shaft 003 at the moment, transfers power to the planet gear through the connecting sleeve 213 and a sun gear on the planet speed reduction assembly 211 on the connecting sleeve to form speed reduction and transfers the power to the installation shaft 212 through the planet carrier, and on one hand, the installation shaft 212 transfers the power to the grinding tool clamping seat 242 through the spline shaft sleeve 241 to drive the grinding tool to rotate to do work; meanwhile, the cam end face of the rotating cylindrical cam 246 cooperates with the fixed cam contact roller 222 and the grinding tool is reciprocally slid by the cooperation of the top pressure spring 245.

If the operation is performed by the "fixed in-situ rotation" mode, the sequence of installing the grinding tool is changed, the fastening nut 243 is screwed in place, then the grinding tool is sleeved, and then the cylindrical cam 246 is screwed in for locking, so that the cam end faces outwards.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments, or alternatives may be employed, by those skilled in the art, without departing from the spirit or ambit of the invention as defined in the appended claims.

Claims

1. The utility model provides a duplex position straight mill, has two stations of installation different grade type grinding apparatus, including fuselage portion (01) and nose portion (02), its characterized in that, the foremost end of nose portion (02) is handle pole holding head (100), the interlude of nose portion (02) is centre bore clamping station (200) with the coaxial setting of handle pole holding head (100), power shaft (03) in fuselage portion (01) and nose portion (02) are regarded as power and are connected, install be handle formula grinding apparatus (m 1) in handle pole holding head (100), install be centre bore grinding apparatus (m 2) in centre bore clamping station (200).

2. The double-station straight mill according to claim 1, wherein the central hole clamping station (200) comprises a speed reducing mechanism (210) for providing power, a slidable clamping assembly (240) connected with the speed reducing mechanism (210), and a reduction gearbox housing (220) which is used for installing the speed reducing mechanism (210) and has one end fixedly connected with the machine body part (01) and the other end being a free end.

3. The double-station direct grinding machine according to claim 2, wherein the speed reducing mechanism (210) comprises a planetary speed reducing assembly (211), a central shaft of the planetary speed reducing assembly (211) is rotatably sleeved on the outer peripheral surface of the power shaft (03), an inner gear ring of the planetary speed reducing assembly is fixed in a speed reducing box shell (220), the double-station direct grinding machine further comprises a mounting shaft (212) one end of which is fixedly connected with a planet carrier of the planetary speed reducing assembly and the other end of which is close to the power shaft (03), and the input end of the planetary speed reducing assembly (211) is connected through a connecting sleeve (213) sleeved on the outer peripheral surface of the power shaft (03).

4. The double-station straight mill according to claim 3, characterized in that the slidable clamping assembly (240) comprises a spline shaft sleeve (241) coaxially and fixedly arranged on the outer peripheral surface of the mounting shaft (212), a grinding tool clamping seat (242) which is matched with the spline on the outer peripheral surface of the spline shaft sleeve (241) in a spline mode and can slide tightly and is provided with threads on the whole outer peripheral surface, a fastening nut (243) which is matched with the threads of the grinding tool clamping seat (242) and is used for fastening a grinding tool, a stopping nut (244) fixedly arranged on the spline shaft sleeve (241), a top pressure spring (245) arranged between the stopping nut (244) and the grinding tool clamping seat (242), and a cylindrical cam (246) which is in threaded connection with the outer periphery of the grinding tool clamping seat (242) and is used for fastening the grinding tool together with the fastening nut (243).

5. The double-station straight mill according to claim 4, characterized in that the diameter and the thread type of the outer peripheral surface of one end of the retaining nut (244) close to the handle clamping head (100) are the same as those of the mounting seat (242).

6. The double-station direct grinding machine according to claim 4, characterized in that one end of the reduction gearbox housing (220) is a mounting surface (221) connected with the machine body part (01), and the other end is a cam contact roller (222) matched with a cam of the cylindrical cam (246).

7. The double-station straight mill according to claim 6, characterized in that the middle section of the reduction gearbox housing (220) is a reduction mounting area (223); the inner gear ring is fixedly connected in the speed reduction mounting area (223), and the planet carrier can rotatably transmit speed reduction power.