CN111396479B

CN111396479B - Workbench brake device

Info

Publication number: CN111396479B
Application number: CN201911175235.3A
Authority: CN
Inventors: 黄春韶; 董宏; 江余岳; 李志斌; 蒋莉莉; 傅正勇
Original assignee: Zhejiang Hangji Co ltd
Current assignee: Zhejiang Hangji Co ltd
Priority date: 2019-11-26
Filing date: 2019-11-26
Publication date: 2021-08-17
Anticipated expiration: 2039-11-26
Also published as: CN111396479A

Abstract

The invention discloses a workbench brake device, and relates to the technical field of workbench parts for mirror finishing; including the rigid coupling be annular brake block on the workstation, a fixture for centre gripping brake block, fixture is including fixing the fixing base on the base, be located the brake groove on the fixing base, be located the spout of fixing base, be located the brake head of spout, spout one end and brake groove intercommunication, the brake block is located the brake inslot, be equipped with the gas injection hole on the fixing base, the brake head corresponds the position at the gas injection hole and is equipped with the air flue, air flue one end and gas injection hole intercommunication, the air flue other end exposes and is close to brake block one side at the brake head, the gas injection hole is connected with the air pump, be equipped with the oil duct on the fixing base, the one end of brake block is kept away from at the spout to oil duct one end connection, the oil duct other end with be used for the pressurized loading system of the fluid in the oil duct. The brake head has long service life; the brake block is stressed uniformly, and the working platform is good in flatness.

Description

Workbench brake device

Technical Field

The invention belongs to the technical field of workbench parts for mirror finishing, and particularly relates to a workbench brake device.

Background

In the time of mirror surface processing, need put the mirror surface on the workstation, then the workstation is rotatory, after having processed, need utilize brake equipment with workstation stall, the similar dish of current brake equipment principle device of stopping, but sometimes the brake finishes after, does not break away from completely between brake head and the brake block, in the time of workstation next work, constantly rubs between brake head and the brake block to the life-span of brake head has been reduced.

Disclosure of Invention

The invention aims to overcome the defect of short service life of a brake head in the prior art, and provides a workbench brake device which is long in service life of the brake head.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a workstation brake equipment, includes that the rigid coupling is annular brake block, is used for the fixture of centre gripping brake block on the workstation, fixture is including fixing the fixing base on the base, be located the brake groove on the fixing base, be located the spout of fixing base, be located the brake head of spout, spout one end and brake groove intercommunication, the brake block is located the brake inslot, be equipped with the gas injection hole on the fixing base, the brake head corresponds the position at the gas injection hole and is equipped with the air flue, air flue one end and gas injection hole intercommunication, the air flue other end exposes and is close to brake block one side at the brake head, the gas injection hole is connected with the air pump, be equipped with the oil duct on the fixing base, the one end of brake block is kept away from at the spout to oil duct one end, the oil duct other end with be used for the pressurized loading system of fluid in the oil duct. When braking, the pressurizing mechanism operates, the upper side of the brake head is attached to the brake pad, huge friction force exists between the brake head and the brake pad, and the workbench stops rotating under the action of the friction force; when braking, the end part of the air passage on the upper side of the braking head is sealed; after the brake is finished, the air pump is connected to the air injection hole and operates, air pressure in the air injection hole rises, at the moment, air is sprayed out from the end of the air passage, the brake pad is completely separated from the brake head, and the brake head is prevented from rubbing with the brake pad to reduce the service life of the brake head in the subsequent use process.

Preferably, the number of the clamping mechanisms is at least two, and the clamping mechanisms are arranged in an annular array by taking the circle center of the brake pad as the center. The clamping mechanisms are increased, the braking effect can be improved, the clamping mechanisms are arranged in an annular array mode, the edge stress of the brake pad can be uniform, and the brake pad is prevented from being deformed unevenly due to the fact that the stress is uneven.

Preferably, the clamping mechanism further comprises a temperature sensor positioned in the air channel, and a pressure regulating mechanism connected with the temperature sensor and used for regulating the pressure of the pressurizing mechanism. Because the frictional force between different fixture and the brake block is different, this can lead to the brake block atress uneven thereby to lead to inhomogeneous the deformation, thereby lead to the inhomogeneous deformation of workstation, consequently, increase pressure regulating mechanism and can adjust the frictional force of every fixture to unanimous, make the brake block atress even.

Preferably, the pressurizing mechanism comprises an oil pump and a plurality of pressure transmission mechanisms, the number of the pressure transmission mechanisms is consistent with that of the clamping mechanisms, the pressure transmission mechanisms are in one-to-one correspondence with the clamping mechanisms, each pressure transmission mechanism comprises a shell fixedly connected to the base and two oil cylinders located in the shell, each oil cylinder comprises a cylinder body, a piston and a piston rod located in the cylinder body, the top end of the cylinder body is fixedly connected to the top surface of the shell, the piston rod faces downwards, oil filling holes are formed in the cylinder body, the oil filling hole of one oil cylinder is connected with the oil pump, the oil filling hole of the other oil cylinder is connected with a corresponding oil duct, the pressure regulating mechanism is located in the shell, the pressure regulating mechanism comprises a sliding rail, a support slidably connected to the sliding rail, a lever erected at the top end of the support, a lead screw penetrating through the support and connected with the thread of the support, and a motor for rotating the lead screw, and the bottom end of the support is slidably connected to the sliding rail, the support top is equipped with the recess, the lever is located the recess, and the bottom of the piston rod of one of them hydro-cylinder is articulated with the one end of lever, and the bottom of the piston rod of another hydro-cylinder is equipped with the second recess, the other end of lever is located the second recess. The structure is reasonable.

Preferably, the brake pad is provided with heat dissipation holes. The heat dissipation performance of the brake pad is improved.

Preferably, the pressurizing mechanism is an oil pump. The oil pump is mature prior art, and convenient maintenance and change.

Preferably, a sealing ring is embedded in the inner side wall of the sliding groove and sleeved on the brake head. The sealing performance is increased.

The invention has the beneficial effects that: the brake head has long service life; the brake block is stressed uniformly, and the working platform is good in flatness.

Drawings

FIG. 1 is a schematic view of the present invention mounted on a work table;

fig. 2 is an enlarged view of fig. 1 at a.

In the figure: the brake comprises a workbench 1, a brake pad 2, a base 3, a fixed seat 4, a brake groove 5, a sliding groove 6, a brake head 7, a gas injection hole 8, a gas channel 9, an oil channel 10, a temperature sensor 11, a heat dissipation hole 12, a shell 13, an oil cylinder 14, a cylinder body 15, a piston 16, a piston rod 17, an oil injection hole 18, a slide rail 20, a lead screw 21, a support 22, a motor 23, a groove 24, a lever 25 and a second groove 26.

Detailed Description

The invention is explained in further detail below with reference to the figures and the detailed description:

example 1:

referring to fig. 1 to 2: a brake device of a workbench comprises a ring-shaped brake block 2 fixedly connected to the workbench 1, at least two clamping mechanisms for clamping the brake block 2, and heat dissipation holes 12 arranged on the brake block 2; the clamping mechanisms are arranged in an annular array by taking the circle center of the brake pad 2 as the center; the clamping mechanism comprises a fixed seat 4 fixed on the base 3, a brake groove 5 positioned on the fixed seat 4, a sliding groove 6 positioned in the fixed seat 4, and a brake head 7 positioned in the sliding groove 6, and also comprises a temperature sensor 11 positioned in the air passage 9 and a pressure regulating mechanism connected with the temperature sensor 11 and used for regulating the pressure of the pressurizing mechanism; a sealing ring is embedded in the inner side wall of the chute 6 and sleeved on the brake head 7; one end of the sliding chute 6 is communicated with the brake groove 5, the brake pad 2 is positioned in the brake groove 5, the fixing seat 4 is provided with a gas injection hole 8, the brake head 7 is provided with a gas passage 9 at a position corresponding to the gas injection hole 8, one end of the gas passage 9 is communicated with the gas injection hole 8, the other end of the gas passage 9 is exposed at one side, close to the brake pad 2, of the brake head 7, the gas injection hole 8 is connected with a gas pump, the fixing seat 4 is provided with an oil duct 10, one end of the oil duct 10 is connected to one end, far away from the brake pad 2, of the sliding chute 6, and the other end of the oil duct 10 is connected with a pressurizing mechanism for pressurizing oil in the oil duct 10; the loading system includes that an oil pump passes pressure mechanism with a plurality of, pass pressure mechanism's quantity and fixture's quantity unanimous, pass pressure mechanism and fixture one-to-one, pass pressure mechanism and include casing 13, two hydro-cylinders 14 that are located casing 13 of rigid coupling on base 3, hydro-cylinder 14 includes cylinder body 15, is located piston 16, piston rod 17 of cylinder body 15, the top rigid coupling of cylinder body 15 is at casing 13 top surface, piston rod 17 is down, be equipped with oil filler point 18 on cylinder body 15, the oil filler point 18 and the oil pump connection of one of them hydro-cylinder 14, the oil filler point 18 and the oil duct 10 that corresponds of another hydro-cylinder 14 are connected, pressure regulating mechanism is located casing 13, pressure regulating mechanism includes slide rail 20, sliding connection support 22 on slide rail 20, erects the lever 25 on support 22 top, passes support 22 and lead screw 21, the lead screw threaded connection with support 22 of support 22, The motor 23 is used for rotating the lead screw 21, the bottom end of the support 22 is connected to the sliding rail 20 in a sliding mode, the top end of the support 22 is provided with a groove 24, the lever 25 is located in the groove 24, the bottom end of the piston rod 17 of one oil cylinder 14 is hinged to one end of the lever 25, the bottom end of the piston rod 17 of the other oil cylinder 14 is provided with a second groove 26, and the other end of the lever 25 is located in the second groove 26.

Principle of embodiment:

when the brake is performed, the oil pump operates, the oil pump simultaneously injects oil to all the pressure transmission mechanisms, the oil pump enters the oil injection hole 18 of one oil cylinder 14 in the shell 13, the piston rod 17 extends out to push the lever 25, the lever 25 rotates, the piston rod 17 of the other oil cylinder 14 retracts, the oil in the oil cylinder 14 is pressed into the oil channel 10, the oil pressure in the oil channel 10 rises, the brake head moves towards the brake pad, friction is generated between the brake head and the brake pad, and the workbench stops rotating under the action of friction force.

After the brake is finished, the air pump is connected to the air injection hole and operates, air pressure in the air injection hole rises, at the moment, air is sprayed out from the end of the air passage, the brake pad is completely separated from the brake head, and the brake head is prevented from rubbing with the brake pad to reduce the service life of the brake head in the subsequent use process.

It should be noted that mirror finishing has a high requirement for precision and, correspondingly, a high requirement for flatness of the table. Traditional workstation also adopts a plurality of fixture to slow down, but because the wearing and tearing of every fixture's brake head are different, causes frictional force different, and this can lead to, and the brake block takes place inhomogeneous deformation to lead to the inhomogeneous deformation of workstation, thereby influence the roughness of workstation.

Because the friction force between the brake heads and the brake pads of different clamping mechanisms is different, the clamping mechanisms do different work on the brake pads, and the work done by the friction force is finally converted into heat, so that the temperature of the brake heads is increased; assuming that one of the brake heads (named as the A brake head) rises in temperature by 10 degrees Celsius after braking, the other brake head (named as the B brake head) rises in temperature by 20 degrees Celsius after braking, it can be known that the friction of the brake head B is twice that of the brake head a, at this time, the motor 23 corresponding to the brake head a operates, the screw 21 rotates, the bracket 22 moves towards the oil cylinder 14 connected with the oil duct 10, the lever 25 slides in the groove 24, because the oil pressure of the oil pump is not changed, the axial force output by the piston rod of the oil cylinder connected with the oil pump is not changed, after the bracket moves, the force arm of the oil cylinder connected with the oil pump is increased, and the arm of force of the oil cylinder connected with the oil passage is reduced, so that the axial force of the oil cylinder connected with the oil passage 10 is increased, and by utilizing the mechanics knowledge, the distance that the bracket needs to move when the axial force of the oil cylinder connected with the oil duct is increased to two times can be calculated; the distance can be measured by using the prior art, such as a sensor like a grating ruler, and the distance is not expanded; in summary, after the bracket 22 moves, the axial force of the cylinder connected to the oil passage 10 is doubled, and at this time, the oil pressure in the oil passage is doubled, and at this time, the friction force of the brake head a is doubled, so that the friction forces at two positions of the brake head a and the brake head B are equal; similarly, the friction force at the brake head B can be halved, so that the corresponding friction force is equal to that at the brake head A. The actions can be automatically completed by the computer after the temperature sensor 11, the motor 23 and the oil cylinder 14 are connected into the computer, and the actions are very efficient.

Example 2:

the present embodiment is different from embodiment 1 in that: the pressure regulating mechanism is removed, the pressure mechanism is an oil pump, and the oil pump is directly connected with the oil duct 10 of the clamping mechanism.

Claims

1. The utility model provides a workstation brake equipment, includes that the rigid coupling is annular brake block, is used for the fixture of centre gripping brake block on the workstation, fixture is including fixing the fixing base on the base, be located the brake groove on the fixing base, be located the spout of fixing base, be located the brake head of spout, spout one end and brake groove intercommunication, the brake block is located the brake inslot, its characterized in that, be equipped with the gas injection hole on the fixing base, the brake head corresponds the position at the gas injection hole and is equipped with the air flue, air flue one end and gas injection hole intercommunication, the air flue other end exposes and is close to brake block one side at the brake head, the gas injection hole is connected with the air pump, be equipped with the oil duct on the fixing base, the one end of brake block is kept away from at the spout to oil duct one end connection, the oil duct other end with be used for the pressurized biasing mechanism of the fluid in the oil duct.

2. The brake apparatus of claim 1, wherein the number of the holding mechanisms is at least two, and the holding mechanisms are arranged in an annular array around the center of the brake pad.

3. The workbench brake apparatus of claim 2, wherein said clamping means further comprises a temperature sensor located in said air passage, a pressure regulating means connected to said temperature sensor for regulating pressure of said pressure means.

4. The workbench brake device according to claim 3, wherein the pressure mechanism comprises an oil pump and a plurality of pressure transmission mechanisms, the number of the pressure transmission mechanisms is consistent with the number of the clamping mechanisms, the pressure transmission mechanisms are in one-to-one correspondence with the clamping mechanisms, each pressure transmission mechanism comprises a housing fixedly connected to the base and two oil cylinders located in the housing, each oil cylinder comprises a cylinder body, a piston and a piston rod located in the cylinder body, the top end of the cylinder body is fixedly connected to the top surface of the housing, the piston rod faces downwards, the cylinder body is provided with an oil filling hole, the oil filling hole of one oil cylinder is connected to the oil pump, the oil filling hole of the other oil cylinder is connected to a corresponding oil duct, the pressure regulating mechanism is located in the housing, and the pressure regulating mechanism comprises a slide rail, a support slidably connected to the slide rail, a lever erected at the top end of the support, a lead screw passing through, The motor is used for rotating the lead screw, support bottom sliding connection is on the slide rail, the support top is equipped with the recess, the lever is located the recess, and the bottom of the piston rod of one of them hydro-cylinder is articulated with the one end of lever, and the bottom of the piston rod of another hydro-cylinder is equipped with the second recess, the other end of lever is located the second recess.

5. A brake rigging for a workbench according to claim 1, wherein heat dissipation apertures are provided in the brake pads.

6. A table brake arrangement as claimed in claim 1, wherein the pressurising means is an oil pump.

7. A workbench brake apparatus in accordance with claim 1, 2, 3, 4, 5 or 6, wherein the inner side wall of said chute is embedded with a sealing ring, said sealing ring is sleeved on the brake head.