CN211439305U - Disc brake pad inner and outer arc edge chamfer grinding machine - Google Patents
Disc brake pad inner and outer arc edge chamfer grinding machine Download PDFInfo
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- CN211439305U CN211439305U CN201922448584.XU CN201922448584U CN211439305U CN 211439305 U CN211439305 U CN 211439305U CN 201922448584 U CN201922448584 U CN 201922448584U CN 211439305 U CN211439305 U CN 211439305U
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- 229910010271 silicon carbide Inorganic materials 0.000 claims description 3
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Abstract
The utility model discloses a disc brake pad inner and outer arc edge chamfer grinding machine, which consists of a frame, a sliding table assembly, a grinding assembly and an electric control system; in the sliding table assembly, a sliding table servo motor is in driving connection with a ball screw, a screw nut is fixedly connected with a platform, linear guide rails are arranged on two sides of the ball screw in parallel, the platform is in sliding connection with the linear guide rails through a sliding block, an electromagnetic chuck is fixed on the platform, and a workpiece positioning plate is fixed on the electromagnetic chuck; in the grinding assembly, a sliding seat lifting device is in driving connection with a sliding seat, two sides of the sliding seat are slidably mounted on a guide column, and a grinding wheel driving motor is in driving connection with a grinding wheel assembly and is fixedly mounted on the sliding seat; the electric control system collects the motion state signals of the sliding table assembly and the grinding assembly and controls the sliding table assembly and the grinding assembly to operate; when the workpiece moves to the position below the grinding wheel assembly, the grinding wheel assembly descends to grind the workpiece. The utility model discloses can once only accomplish the processing of disc brake piece internal and external arc edge chamfer, effectively improve machining efficiency.
Description
Technical Field
The utility model belongs to the technical field of disc brake block surface machining among the friction material, concretely relates to disc brake block internal and external arc edge chamfer grinding machine.
Background
After the automobile disc brake pad is subjected to hot press forming, the surface of a friction material needs to be subjected to machining such as plane grinding and chamfering, the chamfering shape and the position of the brake pad are various, as shown in fig. 1a and fig. 1b, the common chamfering position is at the straight line edges of the left side and the right side of the brake pad, the chamfering shape is a common straight chamfering or oblique chamfering, and the chamfering can be finished through the existing special chamfering machine.
In recent years, there have been some newly developed models of vehicles, particularly buses, in which the chamfers of the brake pads are located at the edges of the inner and outer arcs of the front and rear sides of the brake pads such that the chamfers thereof run in a curved shape along the inner and outer arcs, as shown in fig. 2a and 2 b. The existing special chamfering machine is not suitable for processing the chamfering. At present, no special equipment specially aiming at the chamfering processing of the inner arc edge and the outer arc edge of the brake pad exists. Some manufacturers think of a method of processing by using the existing general mechanical processing machine tool, for example, the brake block is arranged on a lathe chuck to rotate, and the inner and outer arc edge chamfers are respectively processed by a lathe tool; or the workpiece is arranged on a workbench of a vertical milling machine, and special conical end mills are respectively arranged at different radiuses of a special cutter head to respectively process chamfers of inner arcs and outer arcs.
By adopting the processing mode, the special precision clamp is not only required to be customized, but also mainly limited by the structure and the function of the existing machine tool, the clamping and the adjustment are inconvenient, the processing efficiency is low, and the service life of the cutter is short. The chamfer of some large-size workpieces cannot be machined due to the limitation of the structure of the machine tool.
Disclosure of Invention
To the defect that exists among the above-mentioned prior art, the utility model discloses a disc brake piece internal and external arc edge chamfer grinding machine can once only accomplish the processing of disc brake piece internal and external arc edge chamfer. With the attached drawings, the technical scheme of the utility model is as follows:
a disc brake pad inner and outer arc edge chamfering grinding machine is composed of a frame 1, a sliding table assembly 2, a grinding assembly 3 and an electric control system 4; in the sliding table assembly 2, a sliding table servo motor 6 is in driving connection with a ball screw 8, a screw nut in matching connection with the ball screw 8 is fixedly connected with a platform 10, linear guide rails 5 are arranged on two sides of the ball screw 8 in parallel, the platform 10 is in sliding connection with the linear guide rails 5 through a sliding block 9, an electromagnetic chuck 11 is fixed on the platform 10, a workpiece positioning plate 12 is fixed on the electromagnetic chuck 11, and the sliding table assembly 2 drives a workpiece 23 to horizontally and transversely move along a rack 1;
in the grinding assembly 3, a slide seat lifting device 17 is in driving connection with a slide seat 16, two sides of the slide seat 16 are slidably mounted on a guide post 15, a grinding wheel driving motor 18 is in driving connection with a grinding wheel assembly 20 and is fixedly mounted on the slide seat 16, and when a workpiece 23 moves to a position right below the grinding wheel assembly 20, the slide seat 16 is controlled to drive the grinding wheel assembly 20 to move downwards to grind inner and outer arc edge chamfers of the workpiece 23;
and the electric control system 4 acquires motion state signals of the sliding table assembly 2 and the grinding assembly 3 and controls the sliding table assembly 2 and the grinding assembly 3 to operate.
Further, the workpiece positioning plate 12 is composed of a positioning inner plate 26 and a positioning outer plate 25;
the positioning inner plate 26 and the positioning outer plate 25 are both in a centrosymmetric structure, and the positioning inner plate 26 and the positioning outer plate 25 are arranged concentrically;
four positioning grooves are uniformly formed in the inner side of the positioning outer plate 25, the groove walls on the two sides of each positioning groove are positioning side planes which are parallel to each other, and the groove bottoms of the positioning grooves are positioning outer planes;
four groups of positioning bosses are arranged on the outer side of the positioning inner plate 26, the positioning bosses correspond to the positioning grooves of the positioning outer plate one by one, and each group of positioning bosses are respectively provided with two positioning inner planes which are symmetrically arranged and are opposite to two ends of the bottom of the positioning groove of the positioning outer plate 25;
the locating grooves matched with the outlines of the outer edges of the workpieces 23 are formed among the locating side planes, the locating outer planes and the locating inner planes, the workpieces 23 are installed in the locating grooves, the straight outer edges of the left side and the right side of each workpiece 23 are limited between the two locating side planes, the top edges corresponding to the outer arcs of the workpieces 23 are limited on the locating outer planes, and the bottom edges corresponding to the inner arcs of the workpieces 23 are limited on the locating inner planes.
Further, the sliding table servo motor 6 is in driving connection with the ball screw 8 through a belt transmission mechanism.
Further, the grinding wheel assembly 20 is composed of a grinding wheel mounting plate 21 and a grinding head 22;
the grinding wheel mounting plate 21 is an annular mounting plate, the grinding wheel mounting plate 21 is coaxially mounted on a grinding wheel shaft 24 through a grinding wheel seat 19, and the grinding wheel shaft 24 is in driving connection with a grinding wheel driving motor 18;
a plurality of grinding heads 22 are radially distributed and fixed on the grinding wheel mounting plate 21 in an inner-outer layer manner;
the grinding end of the grinding head 22 is a cone frustum, and the conical outer side surface of the cone frustum is a grinding surface of the grinding head 22;
the taper of the grinding face of the grinding head 22 mounted on the inner layer of the grinding wheel mounting plate 21 is matched with the inner arc edge chamfer angle of the workpiece 23, and the taper of the grinding face of the grinding head 22 mounted on the outer layer of the grinding wheel mounting plate 21 is matched with the outer arc edge chamfer angle of the workpiece 23.
Further, the grinding wheel assembly 20 is composed of a grinding wheel inner plate 27 and a grinding wheel outer plate 28;
the grinding wheel inner plate 27 is an annular plate, the grinding wheel inner plate 27 is coaxially arranged on a grinding wheel shaft 24 through a grinding wheel seat 19, and the grinding wheel shaft 24 is in driving connection with a grinding wheel driving motor 18;
the inner ring of the upper end surface of the grinding wheel inner plate 27 is provided with a plurality of connecting holes along the circumferential direction, the lower end of the grinding wheel inner plate 27 is a cone frustum with a downward cone angle, and the conical outer side surface of the cone frustum is an inner grinding surface;
the outer grinding wheel plate 28 is an annular plate, the outer edge of the outer grinding wheel plate 28 is coaxially fixed at the bottom of the annular outer edge of the inner grinding wheel plate 27, the inner side surface of the outer grinding wheel plate 28 is a conical surface with an upward taper angle, and the conical surface is an outer grinding surface;
a trapezoidal ring groove is formed between the inner grinding surface positioned at the outer side of the bottom of the grinding wheel inner plate 27 and the outer grinding surface positioned at the inner side of the bottom of the grinding wheel outer plate 28.
The taper of the inner grinding surface positioned at the outer side of the bottom of the grinding wheel inner plate 27 is matched with the chamfer angle of the inner arc edge of the workpiece 23, and the taper of the outer grinding surface positioned at the inner side of the bottom of the grinding wheel outer plate 28 is matched with the chamfer angle of the outer arc edge of the workpiece 23.
Furthermore, the grinding surfaces of the grinding wheel assembly 20 are made of carborundum.
Further, the electronic control system 4 includes: the device comprises a signal acquisition module, a drive control module and a central processing module.
The signal acquisition module is used for feeding back acquired horizontal and transverse position signals of the workpiece 23 and vertical and longitudinal position signals of the grinding wheel assembly 20 to the central processing module;
the central processing module sends a control signal to the drive control module, and the drive control module controls the sliding table servo motor 6, the grinding wheel drive motor 18 and the drive elements in the sliding seat lifting device 17 to operate.
Further, the slide carriage lifting device 17 is composed of a lifting servo motor 171, a lifting speed reducer 172 and a lifting ball screw pair 173;
the input shaft of the lifting speed reducer 172 is coaxially connected with the output shaft of the lifting servo motor 171, the screw of the lifting ball screw pair 173 is coaxially connected with the output end of the lifting speed reducer 172, the screw nut is fixedly connected with the slide carriage 16, the lifting speed reducer 172 drives the screw to rotate under the driving of the lifting servo motor 171, and the screw nut further drives the slide carriage 16 to move up and down, so that the height of the slide carriage 16 is automatically adjusted.
Furthermore, the slide carriage lifting device 17 further comprises a lifting handwheel 174;
the lifting hand wheel 174 is coaxially connected with the input shaft of the lifting speed reducer 172 through a transmission shaft, the lifting speed reducer 172 drives the screw rod to rotate under the driving of the lifting hand wheel 174, and the screw rod nut further drives the sliding seat 16 to move up and down, so that the height of the sliding seat 16 is manually adjusted.
Compared with the prior art, the beneficial effects of the utility model reside in that:
1. the disc brake pad inner and outer arc edge chamfer grinding machine can finish the processing of one or more disc brake pad inner and outer arc edge chamfers at one time, and effectively improves the working efficiency;
2. the disc brake pad inner and outer arc edge chamfering grinding machine of the utility model accurately positions the workpiece by utilizing the positioning groove on the workpiece positioning plate, so that the workpiece is more simple and convenient to clamp;
3. the disc brake pad inner and outer arc edge chamfering grinding machine adopts the diamond grinding wheel as the chamfering grinding wheel, so that the service life of the grinding tool is prolonged;
4. disc brake block inside and outside arc edge chamfer grinding machine is carrying out inside and outside arc edge chamfer grinding to the disc brake block of unidimensional model and adds man-hour, only need to change the corresponding size the locating plate and the emery wheel assembly can, locating plate and emery wheel assembly easy dismounting, the suitability of grinding machine is stronger.
Drawings
FIG. 1a is a front view of a brake pad with chamfers located on the left and right linear edges;
FIG. 1b is a top view of a brake pad with chamfers located on the left and right linear edges;
FIG. 2a is a front view of a brake pad with chamfers located on the front and rear inner and outer arcuate edges;
FIG. 2b is a side view of the brake pad with the chamfer on the inner and outer arc edges of the front and rear sides;
FIG. 3 is a front view of the disc brake pad inner and outer arc edge chamfer grinding machine of the present invention;
FIG. 4 is a top view of the disc brake pad inner and outer arc edge chamfer grinding machine of the present invention;
FIG. 5 is a left side view of the disc brake pad inner and outer arc edge chamfer grinding machine of the present invention;
FIG. 6 is a front view of a workpiece positioning plate in the disc brake pad inner and outer arc edge chamfering grinding machine of the present invention;
FIG. 7 is a cross-sectional view taken along line A-A of FIG. 6;
fig. 8 is a schematic structural diagram of a grinding wheel assembly in the disc brake pad inner and outer arc edge chamfering grinding machine of the present invention;
fig. 9 is a schematic structural diagram of a grinding head in the disc brake pad inner and outer arc edge chamfering grinding machine of the present invention;
FIG. 10 is the structural schematic diagram of the trapezoidal ring groove type grinding wheel in the disc brake pad inner and outer arc edge chamfer grinding machine of the utility model.
In the figure:
1. a frame, 2, a sliding table assembly, 3, a grinding assembly, 4 and an electric control system,
5. a linear guide rail 6, a sliding table servo motor 7, a toothed belt 8 and a ball screw,
9. a slide block 10, a platform 11, an electromagnetic chuck 12 and a workpiece positioning plate,
13. a dust cover 14, a vertical plate 15, a guide post 16 and a slide seat,
17. a slide carriage lifting device 18, a grinding wheel driving motor 19, a grinding wheel seat 20 and a grinding wheel assembly,
21. a grinding wheel mounting plate 22, a grinding head 23, a workpiece 24, a grinding wheel shaft,
25. a positioning outer plate 26, a positioning inner plate 27, a grinding wheel inner plate 28 and a grinding wheel outer plate,
171. a lifting servo motor 172, a lifting speed reducer 173, a lifting ball screw pair and a lifting hand wheel 174;
a. a positioning side plane, b a positioning outer plane, c a positioning inner plane, d an inner grinding plane,
e. and (5) grinding the surface.
Detailed Description
For clear and complete description of the technical solution and the specific working process of the present invention, the following embodiments are provided in conjunction with the accompanying drawings of the specification:
as shown in fig. 3 and 5, the utility model discloses a disc brake block internal and external arc edge chamfer grinding machine comprises frame 1, slip table assembly 2, grinding assembly 3 and electrical system 4, slip table assembly 2 is installed in frame 1 along the length direction of frame 1, the vertical setting of the upper surface of 3 perpendicular to frames of grinding assembly is installed in frame 1, electrical system 4 respectively with slip table assembly 2 and 3 control connection of grinding assembly, treat that the work piece of processing is installed on slip table assembly 2 to along the motion of 2 length direction of slip table assembly, after work piece motion to 3 belows of grinding assembly, 3 downstream of grinding assembly realizes carrying out the grinding of internal and external arc edge chamfer to the work piece.
As shown in fig. 3, 4, and 5, the slide table assembly 2 includes: the device comprises a linear guide rail 5, a sliding table servo motor 6, a toothed belt 7, a ball screw 8, a sliding block 9, a platform 10, an electromagnetic chuck 11, a workpiece positioning plate 12, a dust cover 13 and a vertical plate 14.
The sliding table servo motor 6 is fixedly installed at one end of the rack 1, an output shaft of the sliding table servo motor 6 is parallel to the length direction of the rack 1, the ball screw 8 is arranged along the length direction of the rack 1, two ends of the ball screw 8 are rotatably installed on the rack 1 through bearings, a driving belt wheel is coaxially installed at the output shaft end of the sliding table servo motor 6, a driven belt wheel is coaxially installed at the end part of the ball screw 8 on one side corresponding to the sliding table servo motor 6, the driving belt wheel is connected with the driven belt wheel through a toothed belt 7, and therefore belt transmission connection between the output shaft of the sliding table servo motor 6 and the ball screw 8 is achieved;
two linear guide rails 5 are arranged, and the two linear guide rails 5 are arranged on two sides of the ball screw 8 in parallel; the platform 10 is horizontally arranged, the vertical plate 14 is fixed at one end of the bottom of the platform 10, a screw nut matched and connected with the ball screw 8 is fixedly connected with the vertical plate 14 through a screw, the two sliding blocks 9 are arranged on two sides of the bottom of the platform 10 in parallel, and the sliding blocks 9 are in sliding connection with the linear guide rail 5 on the corresponding side; the electromagnetic chuck 11 is fixedly installed on the upper surface of the platform 10, and the workpiece positioning plate 12 is fixedly installed on the electromagnetic chuck 11 through a screw.
In the sliding table assembly 2, under the drive of the sliding table servo motor 6, the toothed belt 7 drives the ball screw 8 to rotate, and under the rotary drive of the ball screw 8, the screw nut drives the platform 10 to linearly move along the linear guide rail 5, so that the platform 10 drives the electromagnetic chuck 11 and the workpiece positioning plate 12 above the platform to linearly move.
As shown in fig. 6 and 7, the workpiece positioning plate 12 is composed of a positioning inner plate 26 and a positioning outer plate 25, the positioning inner plate 26 and the positioning outer plate 25 are both in a centrosymmetric structure, and the positioning inner plate 26 and the positioning outer plate 25 are concentrically arranged; four positioning grooves are uniformly formed in the inner side of the positioning outer plate 25, the groove walls on the two sides of each positioning groove are positioning side planes a which are parallel to each other, and the groove bottoms of the positioning grooves are positioning outer planes b; four groups of positioning bosses are arranged on the outer side of the positioning inner plate 26, the positioning bosses correspond to the positioning grooves of the positioning outer plate one by one, and each group of positioning bosses is respectively provided with two positioning inner planes c which are symmetrically arranged and are opposite to two ends of the bottom of the positioning groove of the positioning outer plate 25; a positioning groove matched with the outline of the outer edge of the workpiece 23 is formed among the positioning side planes a, the positioning outer planes b and the positioning inner planes c, the workpiece 23 is installed in the positioning groove, the straight outer edges of the left side and the right side of the workpiece 23 are limited between the two positioning side planes a, the top edge corresponding to the outer arc of the workpiece 23 is limited on the positioning outer plane b, and the bottom edge corresponding to the inner arc of the workpiece 23 is limited on the positioning inner plane c; the workpieces 23 are concentrically installed with the positioning inner plate 26 and the positioning outer plate 25, in this embodiment, four workpieces 23 may be installed on the workpiece positioning plate 12, the four workpieces 23 are concentrically installed on the workpiece positioning plate 12, the four workpieces 23 are positioned and installed in the positioning grooves on the workpiece positioning plate 12, and inner arcs and outer arcs of the four workpieces 23 coincide with distribution circles, which use the symmetric centers of the four positioning grooves as the center of a circle and have radii of R and R, respectively.
As described above, the workpiece 23 is positioned on the upper surface of the electromagnetic chuck 11 by the workpiece positioning plate 12, and the electromagnetic suction force formed by energizing the electromagnetic chuck 11 is firmly sucked and fixed on the electromagnetic chuck 11, and is driven by the slide servo motor 6 to move linearly along the linear guide 5 (i.e., the longitudinal direction of the frame 1) along with the electromagnetic chuck 11.
As shown in fig. 3, 4 and 5, the grinding assembly 3 includes a guide post 15, a slide 16, a slide lifting device 17, a grinding wheel driving motor 18, a grinding wheel spindle 24, a grinding wheel base 19 and a grinding wheel assembly 20.
The two guide posts 15 are symmetrically, vertically and fixedly installed on two sides of the middle of the rack 1, two sides of the sliding seat 16 are respectively sleeved on the guide posts 15 on the corresponding side and can slide up and down along the guide posts 15, an installation cross beam is arranged between the tops of the two guide posts 15, the sliding seat lifting device 17 is installed on the installation cross beam, the lower part of the sliding seat lifting device 17 is connected with the middle position of the top of the sliding seat 16, and the sliding seat 16 slides up and down along the guide posts 15 on the two sides under the driving of the sliding seat lifting device 17 to realize lifting movement; the grinding wheel driving motor 18 is fixedly installed on the rear side vertical surface of the sliding seat 16, an output shaft of the grinding wheel driving motor 18 is vertically arranged upwards, the axis of the grinding wheel shaft 24 is parallel to the output shaft of the grinding wheel driving motor 18 and is vertically arranged, two ends of the grinding wheel shaft 24 are rotatably installed on the front side vertical surface of the sliding seat 16 through bearings, a belt wheel is arranged on the output shaft of the grinding wheel driving motor 18 and is in transmission connection with the belt wheel arranged at the top end of the grinding wheel shaft 24 through a belt, and the grinding wheel driving motor 18 is used for driving the grinding wheel shaft 24 to rotate.
As shown in fig. 5, the carriage lifting device 17 is composed of a lifting servo motor 171, a lifting speed reducer 172, a lifting ball screw assembly 173, and a lifting hand wheel 174.
The lifting speed reducer 172 is fixed on the mounting cross beam between the tops of the two guide columns 15 through a connecting frame, one end of an input shaft of the lifting speed reducer 172 is coaxially connected with an output shaft of the lifting servo motor 171, and the other end of the input shaft of the lifting speed reducer 172 is coaxially connected with a lifting hand wheel 174 through a connecting shaft; in the lifting ball screw pair 173, the screw is coaxially connected with the output end of the lifting speed reducer 172, the screw nut is fixedly connected with the slide carriage 16, and under the rotary drive of the lifting speed reducer 172, the lifting ball screw pair 173 drives the slide carriage 16 to move up and down, so that the height of the slide carriage 16 is adjusted;
the height adjustment of the slide 16 is divided into an automatic mode and a manual mode: on one hand, the lifting speed reducer 172 can realize speed reduction and power transmission through the driving of the lifting servo motor 171, and then realize automatic adjustment of the height of the lower end sliding seat 16 through the lifting ball screw assembly 173; on the other hand, the lifting speed reducer 172 can be driven by a lifting hand wheel 174 to realize speed reduction and power transmission, and then the height of the lower end sliding seat 16 is manually adjusted by a lifting ball screw pair 173;
as shown in fig. 8, the grinding wheel base 19 is coaxially and fixedly installed at the bottom end of the grinding wheel spindle 24, and the grinding wheel assembly 20 is coaxially fixed at the bottom of the grinding wheel base 19 by a screw.
As shown in fig. 8, the grinding wheel assembly 20 is composed of a grinding wheel mounting plate 21 and a grinding head 22, the grinding wheel mounting plate 21 is an annular mounting plate, the inner edge of the grinding wheel mounting plate 21 is coaxially fixed at the bottom of the grinding wheel base 19 through screws, the axis of the grinding wheel mounting plate 21 coincides with the axis of the grinding wheel shaft 24, and r is respectively used as the center of the circle of the grinding wheel mounting plate 211And R1A plurality of mounting holes are uniformly distributed on the radial distribution circle; a plurality of grinding heads 22 are radially distributed and mounted in the mounting holes of the grinding wheel mounting plate 21 in an inner-outer layer manner, and are fixed on the grinding wheel mounting plate 21 through screws.
As shown in fig. 9, the connecting end of the grinding head 22 is provided with a threaded blind hole for fixedly connecting with the grinding wheel mounting plate 21, the grinding end of the grinding head 22 is in a truncated cone shape, the tapered outer side surface of the truncated cone is the grinding surface of the grinding head 22, and the grinding end of the grinding head 22 is made of diamond.
The taper of the grinding surface of the grinding head 22 arranged on the inner layer of the grinding wheel mounting plate 21 is matched with the chamfer angle of the inner arc edge of the workpiece 23, the taper of the grinding surface of the grinding head 22 arranged on the outer layer of the grinding wheel mounting plate 21 is matched with the chamfer angle of the outer arc edge of the workpiece 23, the grinding wheel seat 19 drives the grinding wheel mounting plate 21 to rotate under the driving of the rotation of the grinding wheel shaft 24, and further drives the grinding heads 22 on the inner layer and the outer layer of the grinding wheel mounting plate 21 to rotate around the axis of the grinding wheel shaft 24, so that the grinding heads 22 distributed on the inner layer of the grinding wheel mounting plate 21 perform chamfer grinding processing on the inner arc edge of the workpiece 23, and the grinding heads 22 distributed on.
Besides the structural form composed of the grinding wheel mounting plate 21 and the grinding head 22, the grinding wheel assembly 20 can also adopt a ladder-shaped ring groove type structure, and the specific structure is as follows:
as shown in fig. 10, the grinding wheel assembly 20 is formed by connecting a grinding wheel inner plate 27 and a grinding wheel outer plate 28, wherein the grinding wheel inner plate 27 is an annular plate, a plurality of connecting holes are formed in an inner ring of an upper end surface of the grinding wheel inner plate 27 along a circumferential direction for coaxially and fixedly connecting with the grinding wheel base 19 through a threaded connecting piece, the lower end of the grinding wheel inner plate 27 is in a cone frustum shape with a downward cone angle, and a conical outer side surface of the cone frustum is an inner grinding surface d; the outer grinding wheel plate 28 is an annular plate, the outer edge of the outer grinding wheel plate 28 is coaxially fixed at the bottom of the annular outer edge of the inner grinding wheel plate 27 through screws, the inner side surface of the outer grinding wheel plate 28 is a conical surface with an upward taper angle, and the conical surface is an outer grinding surface e. A trapezoidal ring groove is formed between an inner grinding surface d positioned on the outer side of the bottom of the grinding wheel inner plate 27 and an outer grinding surface e positioned on the inner side of the bottom of the grinding wheel outer plate 28, and the inner grinding surface d and the outer grinding surface e are made of carborundum materials.
The taper of the inner grinding surface d positioned on the outer side of the bottom of the grinding wheel inner plate 27 is matched with the inner arc edge chamfer angle of the workpiece 23, the taper of the outer grinding surface e positioned on the inner side of the bottom of the grinding wheel outer plate 28 is matched with the outer arc edge chamfer angle of the workpiece 23, under the driving of the rotation of the grinding wheel shaft 24, the grinding wheel base 19 drives the grinding wheel inner plate 27 and the grinding wheel outer plate 28 to synchronously rotate, so that the inner grinding surface d on the outer side of the bottom of the grinding wheel inner plate 27 performs chamfer grinding processing on the inner arc edge of the workpiece 23, and the outer grinding surface e on the inner side of the bottom of the grinding wheel outer plate 28 performs chamfer grinding processing on the outer.
In addition, emery wheel inner panel 27 and emery wheel planking 28 can also adopt the integral type structure, on a monoblock emery wheel board, process the trapezoidal annular of round promptly for the both sides conical surface of trapezoidal annular be respectively with work piece 23 inside and outside arc edge chamfer angle assorted interior grinding face d and outer grinding face e, and then realize carrying out chamfer processing to work piece 23 inside and outside arc edge.
As shown in fig. 5, the electronic control system 4 is hinged on the top cross beam of the grinding assembly 3 through a connecting frame, and the electronic control system comprises: the device comprises a signal acquisition module, a drive control module and a central processing module.
The signal acquisition module comprises a sliding table displacement sensor, a sliding table displacement acquisition unit, a sliding seat displacement sensor and a sliding seat displacement acquisition unit; the sliding table displacement sensor is arranged on the platform 10 of the sliding table assembly 2 and transmits the detected horizontal transverse displacement of the platform 10 to the sliding table displacement acquisition unit, so that the electric control system 4 judges the position of the workpiece 23 on the sliding table assembly 2; the slide seat displacement sensor is arranged on a slide seat 16 of the grinding assembly 3, and the slide seat displacement sensor sends the detected vertical longitudinal displacement of the slide seat 16 to the sliding table displacement acquisition unit, so that the electric control system 4 judges the position of the grinding wheel assembly 20 in the vertical direction; the sliding table displacement acquisition unit and the sliding seat displacement acquisition unit are respectively in signal connection with the central processing module through data lines, respectively feed back a horizontal transverse position signal of the workpiece 23 and a vertical longitudinal position signal of the grinding wheel assembly 20 to the central processing module, and realize feedback control on corresponding driving elements through feedback judgment of the central processing module;
the drive control module includes: the device comprises a sliding table servo motor control unit, a grinding wheel driving motor control unit and a lifting servo motor control unit; the sliding table servo motor control unit is connected with the sliding table servo motor 6 through an aviation plug so as to control the sliding table servo motor 6 to operate; the grinding wheel driving motor control unit is connected with the grinding wheel driving motor 18 by adopting an aviation plug so as to control the grinding wheel driving motor 18 to operate; the lifting servo motor control unit is connected with the lifting servo motor 171 by an aviation plug so as to control the lifting servo motor 171 to operate; the sliding table servo motor control unit, the grinding wheel drive motor control unit and the lifting servo motor control unit are respectively in signal connection with the central processing module through control lines, and the central processing module respectively sends control signals to the sliding table servo motor control unit, the grinding wheel drive motor control unit and the lifting servo motor control unit so as to control the sliding table servo motor 6, the grinding wheel drive motor 18 and the lifting servo motor 171 to operate;
the central processing module stores therein a program including: and working program software including functional subprograms of process data input and modification, starting control, program route, feedback judgment, abnormal alarm and the like.
The working mode of the electric control system 4 for controlling the grinding machine to work is divided into: the system comprises a manual mode and an automatic mode, wherein the manual mode is used for setting and adjusting parameters, and the automatic mode is used for automatically running; after the parameters are set and adjusted in the manual mode, the automatic mode is started, an automatic start button on a panel of the electric control system 4 is pressed, and the grinding machine runs according to a set program.
The working process brief of disc brake piece internal and external arc edge chamfer grinding machine says as follows:
a workpiece 23 is manually or mechanically placed into a positioning groove of a workpiece positioning plate 12 by a manipulator, a sliding table servo motor 6 is started, the workpiece moves forwards along with a sliding table assembly 2 until the center of the workpiece positioning plate 12 coincides with the center of a grinding wheel assembly 20, the sliding table servo motor 6 stops driving, a grinding wheel driving motor 18 is started, the grinding wheel assembly 20 rotating at a high speed moves downwards under the driving of a grinding wheel shaft 24, the grinding surface of the grinding wheel assembly 20 simultaneously performs chamfering grinding on the inner arc edge and the outer arc edge of the workpiece, and the downward movement distance depends on the chamfering width required by a product. After grinding is finished, the grinding wheel assembly 20 moves upwards to a vertical initial position, and the sliding table assembly 2 drives the workpiece to return to a horizontal initial position. And taking off the ground workpieces manually or by a mechanical hand, loading the workpieces of the next batch, and starting the next grinding processing cycle.
When different products are replaced, the workpiece positioning plate and the grinding wheel assembly need to be replaced.
Claims (9)
1. The utility model provides a disc brake block inner and outer arc edge chamfer grinding machine which characterized in that:
the grinding machine consists of a frame (1), a sliding table assembly (2), a grinding assembly (3) and an electric control system (4);
in the sliding table assembly (2), a sliding table servo motor (6) is in driving connection with a ball screw (8), a screw nut which is in matching connection with the ball screw (8) is fixedly connected with a platform (10), linear guide rails (5) are arranged on two sides of the ball screw (8) in parallel, the platform (10) is in sliding connection with the linear guide rails (5) through a sliding block (9), an electromagnetic chuck (11) is fixed on the platform (10), a workpiece positioning plate (12) is fixed on the electromagnetic chuck (11), and the sliding table assembly (2) drives a workpiece (23) to horizontally and transversely move along a rack (1);
in the grinding assembly (3), a sliding seat lifting device (17) is in driving connection with a sliding seat (16), two sides of the sliding seat (16) are slidably mounted on a guide column (15), a grinding wheel driving motor (18) is in driving connection with a grinding wheel assembly (20) and is fixedly mounted on the sliding seat (16), and when a workpiece (23) moves to a position right below the grinding wheel assembly (20), the sliding seat (16) is controlled to drive the grinding wheel assembly (20) to move downwards to grind inner and outer arc edge chamfers of the workpiece (23);
and the electric control system (4) collects the motion state signals of the sliding table assembly (2) and the grinding assembly (3) and controls the sliding table assembly (2) and the grinding assembly (3) to operate.
2. The disc brake pad inner and outer arc edge chamfer grinding machine of claim 1, wherein:
the workpiece positioning plate (12) consists of a positioning inner plate (26) and a positioning outer plate (25);
the positioning inner plate (26) and the positioning outer plate (25) are both of a centrosymmetric structure, and the positioning inner plate (26) and the positioning outer plate (25) are concentrically arranged;
four positioning grooves are uniformly formed in the inner side of the positioning outer plate (25), the groove walls on the two sides of each positioning groove are positioning side planes which are parallel to each other, and the groove bottoms of the positioning grooves are positioning outer planes;
four groups of positioning bosses are arranged on the outer side of the positioning inner plate (26), the positioning bosses correspond to the positioning grooves of the positioning outer plate one by one, and each group of positioning bosses are respectively provided with two positioning inner planes which are symmetrically arranged and are opposite to two ends of the bottom of the positioning groove of the positioning outer plate (25);
the locating groove matched with the outline of the outer edge of the workpiece (23) is formed among the locating side planes, the locating outer planes and the locating inner planes, the workpiece (23) is installed in the locating groove, the straight outer edges of the left side and the right side of the workpiece (23) are limited between the two locating side planes, the top edge corresponding to the outer arc of the workpiece (23) is limited on the locating outer plane, and the bottom edge corresponding to the inner arc of the workpiece (23) is limited on the locating inner plane.
3. The disc brake pad inner and outer arc edge chamfer grinding machine of claim 1, wherein:
and the sliding table servo motor (6) is in driving connection with the ball screw (8) through a belt transmission mechanism.
4. The disc brake pad inner and outer arc edge chamfer grinding machine of claim 1, wherein:
the grinding wheel assembly (20) consists of a grinding wheel mounting plate (21) and a grinding head (22);
the grinding wheel mounting plate (21) is an annular mounting plate, the grinding wheel mounting plate (21) is coaxially mounted on a grinding wheel shaft (24) through a grinding wheel seat (19), and the grinding wheel shaft (24) is in driving connection with a grinding wheel driving motor (18);
the grinding heads (22) are radially distributed in an inner layer and an outer layer and are fixed on the grinding wheel mounting plate (21);
the grinding end of the grinding head (22) is a truncated cone, and the conical outer side surface of the truncated cone is a grinding surface of the grinding head (22);
the taper of the grinding surface of the grinding head (22) arranged on the inner layer of the grinding wheel mounting plate (21) is matched with the inner arc edge chamfer angle of the workpiece (23), and the taper of the grinding surface of the grinding head (22) arranged on the outer layer of the grinding wheel mounting plate (21) is matched with the outer arc edge chamfer angle of the workpiece (23).
5. The disc brake pad inner and outer arc edge chamfer grinding machine of claim 1, wherein:
the grinding wheel assembly (20) consists of a grinding wheel inner plate (27) and a grinding wheel outer plate (28);
the grinding wheel inner plate (27) is an annular plate, the grinding wheel inner plate (27) is coaxially arranged on a grinding wheel shaft (24) through a grinding wheel seat (19), and the grinding wheel shaft (24) is in driving connection with a grinding wheel driving motor (18);
the inner ring of the upper end surface of the grinding wheel inner plate (27) is provided with a plurality of connecting holes along the circumferential direction, the lower end of the grinding wheel inner plate (27) is a cone frustum with a downward cone angle, and the conical outer side surface of the cone frustum is an inner grinding surface;
the outer grinding wheel plate (28) is an annular plate, the outer edge of the outer grinding wheel plate (28) is coaxially fixed to the bottom of the annular outer edge of the inner grinding wheel plate (27), the inner side surface of the outer grinding wheel plate (28) is a conical surface with an upward taper angle, and the conical surface is an outer grinding surface;
a trapezoidal ring groove is formed between the inner grinding surface positioned on the outer side of the bottom of the grinding wheel inner plate (27) and the outer grinding surface positioned on the inner side of the bottom of the grinding wheel outer plate (28);
the taper of the inner grinding surface positioned on the outer side of the bottom of the grinding wheel inner plate (27) is matched with the chamfer angle of the inner arc edge of the workpiece (23), and the taper of the outer grinding surface positioned on the inner side of the bottom of the grinding wheel outer plate (28) is matched with the chamfer angle of the outer arc edge of the workpiece (23).
6. The disc brake pad inner and outer arc edge chamfer grinding machine of claim 4 or 5, wherein:
the grinding surface of the grinding wheel assembly (20) is made of carborundum materials.
7. The disc brake pad inner and outer arc edge chamfer grinding machine of claim 1, wherein:
the electronic control system (4) comprises: the device comprises a signal acquisition module, a drive control module and a central processing module;
the signal acquisition module is used for feeding back acquired horizontal and transverse position signals of the workpiece (23) and vertical and longitudinal position signals of the grinding wheel assembly (20) to the central processing module;
the central processing module sends a control signal to the drive control module, and the drive control module controls the sliding table servo motor (6), the grinding wheel drive motor (18) and a drive element in the sliding seat lifting device (17) to operate.
8. The disc brake pad inner and outer arc edge chamfer grinding machine of claim 1, wherein:
the slide seat lifting device (17) consists of a lifting servo motor (171), a lifting speed reducer (172) and a lifting ball screw pair (173);
the input shaft of the lifting speed reducer (172) is coaxially connected with the output shaft of the lifting servo motor (171), the screw is coaxially connected with the output end of the lifting speed reducer (172) in the lifting ball screw pair (173), the screw nut is fixedly connected with the sliding seat (16), the lifting speed reducer (172) drives the screw to rotate under the driving of the lifting servo motor (171), and the screw nut further drives the sliding seat (16) to move up and down, so that the height of the sliding seat (16) is automatically adjusted.
9. The disc brake pad inner and outer arc edge chamfer grinding machine of claim 8, wherein:
the sliding seat lifting device (17) also comprises a lifting hand wheel (174);
the lifting hand wheel (174) is coaxially connected with an input shaft of the lifting speed reducer (172) through a transmission shaft, the lifting speed reducer (172) drives a lead screw to rotate under the driving of the lifting hand wheel (174), and the lead screw nut further drives the sliding seat (16) to move up and down, so that the height of the sliding seat (16) is manually adjusted.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922448584.XU CN211439305U (en) | 2019-12-31 | 2019-12-31 | Disc brake pad inner and outer arc edge chamfer grinding machine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922448584.XU CN211439305U (en) | 2019-12-31 | 2019-12-31 | Disc brake pad inner and outer arc edge chamfer grinding machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115139193A (en) * | 2021-04-05 | 2022-10-04 | 北京机科国创轻量化科学研究院有限公司 | Automatic equipment of polishing of disk |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115139193A (en) * | 2021-04-05 | 2022-10-04 | 北京机科国创轻量化科学研究院有限公司 | Automatic equipment of polishing of disk |
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