CN110977648A - Machining device and machining method for winding drum brake disc - Google Patents

Machining device and machining method for winding drum brake disc Download PDF

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Publication number
CN110977648A
CN110977648A CN201910973008.9A CN201910973008A CN110977648A CN 110977648 A CN110977648 A CN 110977648A CN 201910973008 A CN201910973008 A CN 201910973008A CN 110977648 A CN110977648 A CN 110977648A
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China
Prior art keywords
brake disc
grinding wheel
motor
hole
sliding block
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Granted
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CN201910973008.9A
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Chinese (zh)
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CN110977648B (en
Inventor
朱厚玲
陈云节
董军
刘云
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Wuhan Marine Machinery Plant Co Ltd
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Wuhan Marine Machinery Plant Co Ltd
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Priority to CN201910973008.9A priority Critical patent/CN110977648B/en
Publication of CN110977648A publication Critical patent/CN110977648A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
    • B24B7/10—Single-purpose machines or devices
    • B24B7/16—Single-purpose machines or devices for grinding end-faces, e.g. of gauges, rollers, nuts, piston rings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B41/00—Component parts such as frames, beds, carriages, headstocks
    • B24B41/06—Work supports, e.g. adjustable steadies
    • B24B41/061—Work supports, e.g. adjustable steadies axially supporting turning workpieces, e.g. magnetically, pneumatically
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B47/00—Drives or gearings; Equipment therefor
    • B24B47/10—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces
    • B24B47/12—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces by mechanical gearing or electric power
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B47/00—Drives or gearings; Equipment therefor
    • B24B47/20—Drives or gearings; Equipment therefor relating to feed movement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B47/00—Drives or gearings; Equipment therefor
    • B24B47/22—Equipment for exact control of the position of the grinding tool or work at the start of the grinding operation

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)

Abstract

The invention discloses a machining device and a machining method for a winding drum brake disc, and belongs to the field of machining. The processing device comprises a grinding wheel, a second motor, a fixed seat, a sliding block, a lead screw, a handle and a base; the base is provided with a linear guide rail and a baffle, the baffle is provided with a through hole, and the extending direction of the through hole is parallel to the extending direction of the linear guide rail; the sliding block is slidably arranged on the linear guide rail, a screw hole is formed in the sliding block, and the axis of the screw hole is overlapped with the axis of the through hole; the first end of the screw rod penetrates through the screw hole and is in threaded connection with the sliding block, and the second end of the screw rod penetrates through the through hole and is fixedly connected with the handle; the fixing base is fixed on the slider, and the motor is fixed on the fixing base, and the emery wheel is connected with motor drive, and the axis of emery wheel is parallel with linear guide's extending direction. The invention is beneficial to the brake disc to meet the acceptance requirement.

Description

Machining device and machining method for winding drum brake disc
Technical Field
The invention relates to the field of machining, in particular to a machining device and a machining method for a winding drum brake disc.
Background
The hoisting mechanism of large-scale hoisting equipment such as a ship lift, a hoister and the like comprises a motor, a coupling, a reducer, a winding drum and a brake disc. A disc brake disc is a friction type brake disc, and the rotating element in the friction pair is a metal disc working on the end face, which is called a brake disc, and the friction element clamps the brake disc from both sides to generate braking.
Brake discs are typically mounted at the ends of the drum, with stringent requirements for end runout of the brake discs relative to the drum axis in the mounting specifications. The existing machining process of the brake disc generally welds or assembles the brake disc on a winding drum to form the brake disc and the winding drum into a whole, and then the end face of the brake disc is machined on a lathe by taking the axis of the winding drum as a reference, so that the end face jump of the brake disc relative to the axis of the winding drum meets the standard requirement.
With the increasing load of hoisting equipment in recent years, the size of the drum and the brake disc is also increasing. Basically, no equipment can be used for integrally processing the winding drum and the brake disc, the winding drum and the brake disc need to be processed separately, and the end face runout of the brake disc relative to the axis of the winding drum cannot meet the standard requirement.
And when the diameter of the brake disc is more than 5 m, even if the winding drum and the brake disc are assembled as a whole for machining, the whole cannot be transported after machining due to transportation restrictions. The whole body can only be split firstly, each split part is transported separately, and all parts are installed and restored after being transported to an acceptance site. The diameter of the brake disc is more than 5 meters, the thickness is thin, the rigidity is poor, the brake disc can deform in the processes of storage, transportation and hoisting, and the end face runout of the brake disc after installation and reduction relative to the axis of the winding drum can not meet the standard requirement.
Because the machining conditions of an acceptance site are limited, and a machining lathe is not generally available, the method adopted at present is to manually grind the end surface of the brake disc by using a handheld electric grinding wheel so that the end surface runout of the brake disc relative to the axis of the winding drum meets the specification requirement on the site and passes the acceptance.
In the process of implementing the invention, the inventor finds that the prior art has at least the following problems:
the flatness and the parallelism of polishing can not be controlled in the manual polishing process, the polishing effect is poor, and the end face runout of the polished brake disc relative to the axis of the winding drum still can not meet the acceptance requirement.
Disclosure of Invention
The embodiment of the invention provides a machining device and a machining method for a winding drum brake disc, which can control the grinding flatness and parallelism, ensure the grinding effect and enable the end face runout of the ground brake disc relative to the axis of a winding drum to meet the acceptance requirement. The technical scheme is as follows:
on one hand, the embodiment of the invention provides a machining device for a winding drum brake disc, which comprises a grinding wheel, a second motor, a fixed seat, a sliding block, a lead screw, a handle and a base, wherein the grinding wheel is arranged on the second motor; the base is provided with a linear guide rail and a baffle, the baffle is provided with a through hole, and the extending direction of the through hole is parallel to the extending direction of the linear guide rail; the sliding block is slidably arranged on the linear guide rail, a screw hole is formed in the sliding block, and the axis of the screw hole is overlapped with the axis of the through hole; the first end of the screw rod penetrates through the screw hole and is in threaded connection with the sliding block, and the second end of the screw rod penetrates through the through hole and is fixedly connected with the handle; the fixed seat is fixed on the sliding block, the motor is fixed on the fixed seat, the grinding wheel is in transmission connection with the motor, and the axis of the grinding wheel is parallel to the extending direction of the linear guide rail.
Optionally, the grinding wheel and the motor are implemented using an electric grinder.
Further, the grinding wheel and the motor are realized by a bench grinder.
Optionally, the fixing seat is implemented by a tool rest of a lathe.
Optionally, the slide block, the lead screw, and the handle are implemented using a slide plate assembly of a lathe.
In another aspect, an embodiment of the present invention provides a method for machining a drum brake disc, where the method includes:
assembling the hoisting mechanism into a whole; the winding mechanism comprises a first motor, a speed reducer, a winding drum and a brake disc, wherein the speed reducer is in transmission connection with the first motor and the winding drum respectively, and the brake disc is fixed on the end face of the winding drum;
determining the machining allowance of the brake disc;
mounting a machining device on one side of the brake disc; the processing device comprises a grinding wheel, a second motor, a fixed seat, a sliding block, a lead screw, a handle and a base; the base is provided with a linear guide rail and a baffle, the baffle is provided with a through hole, and the extending direction of the through hole is parallel to the extending direction of the linear guide rail; the sliding block is slidably arranged on the linear guide rail, a screw hole is formed in the sliding block, and the axis of the screw hole is overlapped with the axis of the through hole; the first end of the screw rod penetrates through the screw hole and is in threaded connection with the sliding block, and the second end of the screw rod penetrates through the through hole and is fixedly connected with the handle; the fixed seat is fixed on the sliding block, the motor is fixed on the fixed seat, the grinding wheel is in transmission connection with the motor, and the axis of the grinding wheel is parallel to the extending direction of the linear guide rail; the grinding wheel is attached to the end face of the brake disc, and the axis of the grinding wheel is perpendicular to the axis of the brake disc;
and controlling the first motor to drive the brake disc to rotate, controlling the second motor to drive the grinding wheel to rotate, rotating the handle, converting the rotary motion into linear motion by the lead screw, and driving the grinding wheel to move along the end face of the brake disc by the slide block.
Optionally, the controlling the first motor to drive the brake disc to rotate, the controlling the second motor to drive the grinding wheel to rotate, and rotating the handle, the lead screw converts a rotational motion into a linear motion, and the sliding block drives the grinding wheel to move along the end surface of the brake disc, including:
moving the grinding wheel along the radial direction of the brake disc for multiple times, so that the grinding wheel moves from the outer edge of the brake disc to the inner edge of the brake disc, and performing rough grinding on the brake disc;
and moving the grinding wheel along the radial direction of the brake disc for multiple times, so that the grinding wheel moves from the outer edge of the brake disc to the inner edge of the brake disc, and finely grinding the brake disc.
Further, the number of turns of the brake disc is more than one turn between two adjacent times of movement of the grinding wheel.
Further, when the brake disc is subjected to rough grinding, the distance of the grinding wheel moving along the radial direction of the brake disc is 0.5-0.75 times of the width of the grinding wheel; and when the brake disc is finely ground, the radial movement distance of the grinding wheel along the brake disc is 0.3-0.5 times of the width of the grinding wheel.
Further, the grinding wheel moves 0.1 mm-0.2 mm towards the end surface of the brake disc each time the brake disc is roughly ground by moving from the outer edge of the brake disc to the inner edge of the brake disc; and when the grinding wheel moves from the outer edge of the brake disc to the inner edge of the brake disc to finely grind the brake disc, the grinding wheel moves 0.02-0.04 mm towards the end surface of the brake disc.
The technical scheme provided by the embodiment of the invention has the following beneficial effects:
through the twist grip, the rotary motion of lead screw turns into the linear motion of slider, utilizes fixing base and motor, drives the emery wheel and removes along the terminal surface of brake disc to the flatness and the depth of parallelism of effective control grinding guarantee the result of processing, make the relative reel axis's of brake disc after the grinding face run-out reach the acceptance requirement. And the rotation of the brake disc is matched with the processing device to move along the radial direction of the brake disc, so that the processing of all areas on the brake disc can be completed, the workload is small, and the working efficiency is high. In addition, the whole machining device is small in size, convenient to carry, particularly suitable for reprocessing the brake disc which cannot meet the acceptance requirements after installation and reduction in an acceptance site, and the problem that the acceptance site is lack of machining equipment such as a lathe is solved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a front view of a machining device for a drum brake disc according to an embodiment of the present invention;
fig. 2 is a top view of a machining device for a drum brake disc according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a structure of one implementation of a slider portion provided in an embodiment of the invention;
FIG. 4 is a schematic diagram of a slider portion of another implementation according to an embodiment of the present invention;
FIG. 5 is a front view of a machining device according to an embodiment of the present invention installed on one side of a brake disc;
FIG. 6 is a top view of a machining device mounted to one side of a brake disc in accordance with an embodiment of the present invention;
fig. 7 is a flowchart of a method for machining a drum brake disc according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
The embodiment of the invention provides a machining device for a winding drum brake disc. Fig. 1 is a front view of a machining device for a roll brake disc according to an embodiment of the present invention, and fig. 2 is a plan view of the machining device for a roll brake disc according to an embodiment of the present invention. Referring to fig. 1 and 2, the machining device includes a grinding wheel 11, a motor 12, a fixing base 20, a slider 31, a lead screw 32, a handle 33, and a base 40.
Fig. 3 and 4 are schematic structural diagrams of a partial implementation of a slider according to an embodiment of the present invention. Referring to fig. 3 and 4, in the present embodiment, the linear guide 41 and the baffle 42 are provided on the base 40, and the baffle 42 is provided with a through hole 42a, and the extending direction of the through hole 42a is parallel to the extending direction of the linear guide 41. The slider 31 is slidably disposed on the linear guide 41, and the slider 31 is provided with a screw hole 31a, and an axis of the screw hole 31a coincides with an axis of the through hole 42 a. The first end of the screw rod 32 passes through the screw hole 31a and is in threaded connection with the slider 31, and the second end of the screw rod 32 passes through the through hole 42a and is fixedly connected with the handle 33. As shown in fig. 1 and 2, the fixing seat 20 is fixed on the sliding block 31, the motor 12 is fixed on the fixing seat 20, the grinding wheel 11 is in transmission connection with the motor 12, and the axis of the grinding wheel 11 is parallel to the extending direction of the linear guide rail 41.
Fig. 5 is a front view of a machining device according to an embodiment of the present invention installed on a side of a brake disc, and fig. 6 is a plan view of the machining device according to an embodiment of the present invention installed on a side of the brake disc. Referring to fig. 5 and 6, the winding mechanism includes a motor 100, a reducer 200, a winding drum 300, and a brake disc 400, wherein the reducer 200 is respectively connected to the motor 100 and the winding drum 300 in a driving manner, and the brake disc 400 is fixed to an end surface of the winding drum 300. The grinding wheel 11 is attached to the end face of the brake disk 300, and the axis of the grinding wheel 11 is perpendicular to the axis of the brake disk 300.
The working principle of the machining tool for the winding drum brake disc provided by the embodiment of the invention is briefly described below with reference to fig. 1 and 2.
The motor 12 rotates to drive the grinding wheel 11 in transmission connection with the motor to rotate, and the grinding wheel 11 grinds the end face of the brake disc. The handle 33 is rotated to drive the screw rod 32 fixedly connected with the handle 33 to rotate, the sliding block 31 in threaded connection with the screw rod 32 is limited by the linear guide rail 41 to do linear motion along the extension direction of the linear guide rail 41, and the grinding wheel 11 in transmission connection with the motor 12 is driven to move in the linear direction through the fixed seat 20 fixed on the sliding block 31 and the motor 12 fixed on the fixed seat 20 in sequence, so that the grinding wheel 11 moves along the end face of the brake disc, and the machining allowance of the end face of the brake disc is removed.
The motor 100 drives the winding drum 300 to rotate through the speed reducer 200, drives the brake disc 400 fixedly connected with the winding drum 300 to rotate, so that the grinding wheel 11 can process the end surface of the brake disc 400 along the circumferential direction of the brake disc 400, and can be matched with the handle to drive the grinding wheel 11 to move along the end surface of the brake disc, thereby realizing the processing of all regions on the brake disc 400.
Further, the grinding depth of the grinding wheel 11 can be adjusted by moving the grinding wheel 11 in the axial direction of the brake disk 400 by means of, for example, bolting down.
According to the embodiment of the invention, the rotary motion of the lead screw is converted into the linear motion of the sliding block by rotating the handle, and the grinding wheel is driven to move along the end face of the brake disc by using the fixed seat and the motor, so that the grinding flatness and parallelism are effectively controlled, the processing effect is ensured, and the end face runout of the ground brake disc relative to the axis of the winding drum meets the acceptance requirement. And the rotation of the brake disc is matched with the processing device to move along the radial direction of the brake disc, so that the processing of all areas on the brake disc can be completed, the workload is small, and the working efficiency is high. In addition, the whole machining device is small in size, convenient to carry, particularly suitable for reprocessing the brake disc which cannot meet the acceptance requirements after installation and reduction in an acceptance site, and the problem that the acceptance site is lack of machining equipment such as a lathe is solved.
In one implementation of the present embodiment, as shown in fig. 3, the first surface of the base 40 includes a convex portion 40a and concave portions 40b located at two sides of the convex portion 40a, and the convex portion 40a and the concave portions 40b are in a strip shape and form a linear guide 41; a shutter 42 is provided on one end of the boss 40 a. Correspondingly, the slider 31 is provided with a strip-shaped through groove 31a with the width consistent with that of the protruding portion 40a, so that the slider 31 is sleeved on the protruding portion 40a to realize sliding on the linear guide rail 41. Meanwhile, the slide block 31 is opposite to the baffle 42, and the lead screw 32 can sequentially pass through the upper screw hole 31a of the slide block 31 and the through hole 42a of the baffle 42.
In another implementation manner of the present embodiment, as shown in fig. 4, a strip-shaped through groove 40c is formed in the substrate 40 to form a strip-shaped guide rail 41; the shutter 42 is provided with one end of the strip-shaped through groove 40 c. Accordingly, the slider 31 is disposed in the strip-shaped through groove 40c, and slides on the linear guide 41. Meanwhile, the slide block 31 is opposite to the baffle 42, and the lead screw 32 can sequentially pass through the upper screw hole 31a of the slide block 31 and the through hole 42a of the baffle 42.
In addition, a bar-shaped through hole 40d communicating with the bar-shaped through groove 40c is provided on the first surface of the base 40 so that the holder 20 can be fixed to the slider 31.
Alternatively, the grinding wheel 11 and the motor 12 may be implemented by an electric grinder.
The finished product is directly adopted for realization, the acquisition is convenient, and the realization cost is lower.
In practical application, the grinding wheel 11 and the motor 12 can also be realized by an electric belt sander.
Further, the grinding wheel 11 and the motor 12 may be implemented by a table grinder.
The table type grinding machine is convenient to replace the grinding wheel, and can select grinding wheels with different abrasive particles and specifications according to actual requirements.
For example, the brake disc is made of carbon steel or alloy steel, the end face of the brake disc is subjected to plane machining, a flat grinding wheel can be adopted, and the grinding material is brown corundum A with the granularity of 36-60 #.
Alternatively, the holder 20 may be implemented as a tool post of a lathe.
The parts on the lathe are directly adopted for assembly, the acquisition is convenient, and the realization cost is low.
Further, the motor 12 may be fixed to the fixing base 20 by bolts.
The lathe tool rest is provided with a screw hole and a bolt correspondingly, and the motor is directly fixed through the bolt, so that the lathe tool is simple and convenient to realize.
Alternatively, the slider 31, the lead screw 32 and the handle 33 may be implemented using a slide assembly of a lathe.
The parts on the lathe are directly adopted for assembly, the acquisition is convenient, and the realization cost is low.
The embodiment of the invention provides a machining method of a winding drum brake disc, which is suitable for machining the end face of the brake disc by adopting the machining device shown in fig. 1 and 2. Fig. 7 is a flowchart of a method for machining a drum brake disc according to an embodiment of the present invention. Referring to fig. 7, the processing method includes:
step 201: the hoisting mechanism is assembled into a whole.
In this embodiment, hoist mechanism includes first motor, reduction gear, reel and brake disc, and the reduction gear is connected with first motor, reel transmission respectively, and the brake disc is fixed on the terminal surface of reel.
Step 202: and determining the machining allowance of the brake disc.
Optionally, this step 202 may include:
and measuring the end face runout of the brake disc relative to the axis of the winding drum by using a dial indicator.
The end face runout of the brake disc relative to the axis of the winding drum can be directly measured by adopting the dial indicator, and the method is simple and convenient to realize.
In practical application, the brake disc has two end faces, the runout conditions of the two end faces can be measured respectively, and the following steps 203 to 204 are performed for the runout conditions of the two end faces respectively.
After measurement, the measurement result can be directly used as the machining allowance of the brake disc, and the machining effect is easier to pass the acceptance requirement; the measurement result can be subtracted by the acceptance requirement to be used as the machining allowance of the brake disc, so that the thickness of the brake disc is maximized as far as possible, and the deformation of the brake disc is avoided.
Step 203: and installing a machining device on one side of the brake disc.
In this embodiment, the processing device includes a grinding wheel, a second motor, a fixed seat, a slide block, a screw rod, a handle and a base; the base is provided with a linear guide rail and a baffle, the baffle is provided with a through hole, and the extending direction of the through hole is parallel to the extending direction of the linear guide rail; the sliding block is slidably arranged on the linear guide rail, a screw hole is formed in the sliding block, and the axis of the screw hole is overlapped with the axis of the through hole; the first end of the screw rod penetrates through the screw hole and is in threaded connection with the sliding block, and the second end of the screw rod penetrates through the through hole and is fixedly connected with the handle; the fixed seat is fixed on the sliding block, the motor is fixed on the fixed seat, the grinding wheel is in transmission connection with the motor, and the axis of the grinding wheel is parallel to the extending direction of the linear guide rail; the grinding wheel is attached to the end face of the brake disc, and the axis of the grinding wheel is perpendicular to the axis of the brake disc.
Step 204: the first motor is controlled to drive the brake disc to rotate, the second motor is controlled to drive the grinding wheel to rotate, the handle is rotated, the screw rod converts the rotating motion into linear motion, and the sliding block is utilized to drive the grinding wheel to move along the end face of the brake disc.
Optionally, this step 204 may include:
moving the grinding wheel along the radial direction of the brake disc for multiple times, so that the grinding wheel moves from the outer edge of the brake disc to the inner edge of the brake disc, and performing coarse grinding on the brake disc;
and moving the grinding wheel along the radial direction of the brake disc for multiple times, so that the grinding wheel moves from the outer edge of the brake disc to the inner edge of the brake disc, and finely grinding the brake disc.
The brake disc is subjected to coarse grinding, so that the machining efficiency can be improved; and the brake disc is finely ground, so that the processing effect can be ensured.
Further, between two adjacent moving grinding wheels, the number of rotation turns of the brake disc can be more than one turn.
After the grinding wheel is used for processing the whole circle of the brake disc, the grinding wheel is moved, and all areas of the end face of the brake disc can be processed.
Furthermore, when the brake disc is subjected to rough grinding, the distance of the grinding wheel moving along the radial direction of the brake disc can be 0.5-0.75 times of the width of the grinding wheel; when the brake disc is finely ground, the distance of the grinding wheel moving in the radial direction of the brake disc may be 0.3 to 0.5 times the width of the grinding wheel.
The moving distance of the coarse grinding and the accurate grinding does not exceed the width of the grinding wheel, which is beneficial to ensuring that all areas of the end surface of the brake disc can be processed. Meanwhile, the moving distance of the rough grinding is larger than that of the accurate grinding, so that the machining efficiency is guaranteed in the rough grinding process, and the machining effect is guaranteed in the accurate grinding process.
Further, each time the grinding wheel moves from the outer edge of the brake disc to the inner edge of the brake disc to roughly grind the brake disc, the grinding wheel can move 0.1 mm-0.2 mm towards the end face of the brake disc; when the grinding wheel moves from the outer edge of the brake disc to the inner edge of the brake disc to finish the brake disc, the grinding wheel can move 0.02 mm-0.04 mm towards the end surface of the brake disc.
The moving distance of the rough grinding is larger than that of the accurate grinding, so that the machining efficiency is guaranteed in the rough grinding process, and the machining effect is guaranteed in the accurate grinding process.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims (10)

1. The machining device for the winding drum brake disc is characterized by comprising a grinding wheel (11), a motor (12), a fixed seat (20), a sliding block (31), a lead screw (32), a handle (33) and a base (40); the base (40) is provided with a linear guide rail (41) and a baffle (42), the baffle (42) is provided with a through hole (42a), and the extending direction of the through hole (42a) is parallel to the extending direction of the linear guide rail (41); the sliding block (31) is slidably arranged on the linear guide rail (41), a screw hole (31a) is formed in the sliding block (31), and the axis of the screw hole (31a) is overlapped with the axis of the through hole (42 a); the first end of the lead screw (32) penetrates through the screw hole (31a) and is in threaded connection with the sliding block (31), and the second end of the lead screw (32) penetrates through the through hole (42a) and is fixedly connected with the handle (33); the fixed seat (20) is fixed on the sliding block (31), the motor (12) is fixed on the fixed seat (20), the grinding wheel (11) is in transmission connection with the motor (12), and the axis of the grinding wheel (11) is parallel to the extending direction of the linear guide rail (41).
2. Machining device according to claim 1, characterized in that said grinding wheel (11) and said motor (12) are realized with an electric grinder.
3. Machining device according to claim 2, characterized in that said grinding wheel (11) and said motor (12) are realized with a bench grinder.
4. A machining device according to any one of claims 1 to 3, characterized in that the holder (20) is realized as a tool holder of a lathe.
5. Machining device according to any one of claims 1 to 3, characterized in that said slide (31), said lead screw (32) and said handle (33) are realized by means of a slide assembly of a lathe.
6. A machining method for a drum brake disc is characterized by comprising the following steps:
assembling the hoisting mechanism into a whole; the winding mechanism comprises a first motor, a speed reducer, a winding drum and a brake disc, wherein the speed reducer is in transmission connection with the first motor and the winding drum respectively, and the brake disc is fixed on the end face of the winding drum;
determining the machining allowance of the brake disc;
mounting a machining device on one side of the brake disc; the processing device comprises a grinding wheel, a second motor, a fixed seat, a sliding block, a lead screw, a handle and a base; the base is provided with a linear guide rail and a baffle, the baffle is provided with a through hole, and the extending direction of the through hole is parallel to the extending direction of the linear guide rail; the sliding block is slidably arranged on the linear guide rail, a screw hole is formed in the sliding block, and the axis of the screw hole is overlapped with the axis of the through hole; the first end of the screw rod penetrates through the screw hole and is in threaded connection with the sliding block, and the second end of the screw rod penetrates through the through hole and is fixedly connected with the handle; the fixed seat is fixed on the sliding block, the motor is fixed on the fixed seat, the grinding wheel is in transmission connection with the motor, and the axis of the grinding wheel is parallel to the extending direction of the linear guide rail; the grinding wheel is attached to the end face of the brake disc, and the axis of the grinding wheel is perpendicular to the axis of the brake disc;
and controlling the first motor to drive the brake disc to rotate, controlling the second motor to drive the grinding wheel to rotate, rotating the handle, converting the rotary motion into linear motion by the lead screw, and driving the grinding wheel to move along the end face of the brake disc by the slide block.
7. The machining method according to claim 6, wherein the controlling the first motor to drive the brake disc to rotate, the controlling the second motor to drive the grinding wheel to rotate, and the rotating the handle, the lead screw converting the rotational motion into a linear motion, and the sliding block driving the grinding wheel to move along the end surface of the brake disc comprises:
moving the grinding wheel along the radial direction of the brake disc for multiple times, so that the grinding wheel moves from the outer edge of the brake disc to the inner edge of the brake disc, and performing rough grinding on the brake disc;
and moving the grinding wheel along the radial direction of the brake disc for multiple times, so that the grinding wheel moves from the outer edge of the brake disc to the inner edge of the brake disc, and finely grinding the brake disc.
8. The method of claim 7, wherein between two consecutive movements of the grinding wheel, the brake disk rotates more than one turn.
9. The machining method according to claim 8, wherein, when the brake disc is roughly ground, the grinding wheel moves in a radial direction of the brake disc by a distance of 0.5 to 0.75 times a width of the grinding wheel; and when the brake disc is finely ground, the radial movement distance of the grinding wheel along the brake disc is 0.3-0.5 times of the width of the grinding wheel.
10. The machining method according to any one of claims 7 to 9, wherein the grinding wheel moves 0.1mm to 0.2mm toward the end surface of the brake disc each time the brake disc is roughly ground by moving the grinding wheel from the outer edge of the brake disc to the inner edge of the brake disc; and when the grinding wheel moves from the outer edge of the brake disc to the inner edge of the brake disc to finely grind the brake disc, the grinding wheel moves 0.02-0.04 mm towards the end surface of the brake disc.
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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK149764B (en) * 1983-02-08 1986-09-29 Ahlman Jens Holm Apparatus for grinding brake disks
CN103934752A (en) * 2014-04-09 2014-07-23 温州捷高科技有限公司 Auxiliary device for full-automatic grinding machine
CN204338871U (en) * 2014-12-24 2015-05-20 河北钢铁集团矿业有限公司 A kind of device of scene processing mine hoist winching barrel brake disc
CN105436904A (en) * 2015-12-25 2016-03-30 湖南远扬煤机制造有限公司 Turning and grinding device for brake disc of main shaft device of mine hoister
CN207888332U (en) * 2018-02-27 2018-09-21 邯钢集团衡水薄板有限责任公司 A kind of small diameter drill bit sharpening equipment
CN109129074A (en) * 2018-10-18 2019-01-04 瓦房店金峰轴承制造有限公司 A kind of double-ended grinding machine
CN110125742A (en) * 2019-05-21 2019-08-16 浙江隆中机械股份有限公司 A kind of processing technology of brake disc

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK149764B (en) * 1983-02-08 1986-09-29 Ahlman Jens Holm Apparatus for grinding brake disks
CN103934752A (en) * 2014-04-09 2014-07-23 温州捷高科技有限公司 Auxiliary device for full-automatic grinding machine
CN204338871U (en) * 2014-12-24 2015-05-20 河北钢铁集团矿业有限公司 A kind of device of scene processing mine hoist winching barrel brake disc
CN105436904A (en) * 2015-12-25 2016-03-30 湖南远扬煤机制造有限公司 Turning and grinding device for brake disc of main shaft device of mine hoister
CN207888332U (en) * 2018-02-27 2018-09-21 邯钢集团衡水薄板有限责任公司 A kind of small diameter drill bit sharpening equipment
CN109129074A (en) * 2018-10-18 2019-01-04 瓦房店金峰轴承制造有限公司 A kind of double-ended grinding machine
CN110125742A (en) * 2019-05-21 2019-08-16 浙江隆中机械股份有限公司 A kind of processing technology of brake disc

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