CN213197068U - Cylindrical grinding device of surface grinding machine - Google Patents
Cylindrical grinding device of surface grinding machine Download PDFInfo
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- CN213197068U CN213197068U CN202021517731.0U CN202021517731U CN213197068U CN 213197068 U CN213197068 U CN 213197068U CN 202021517731 U CN202021517731 U CN 202021517731U CN 213197068 U CN213197068 U CN 213197068U
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- center seat
- center
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- morse taper
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Abstract
The utility model provides a surface grinder external grinding device, including slip apex seat, bottom plate, fixed apex seat, motor. The utility model discloses utilize the frock of flat grinder processing top grinding excircle for the task of original multichannel process, multiple equipment can be accomplished at flat grinder equipment, one process processing, shortens the time, the cost of processing greatly, and can gain better processingquality. The production cost of the tool is much lower than the purchase cost of high-precision equipment.
Description
Technical Field
The utility model belongs to the technical field of machining, especially, relate to flat grinder external grinding device.
Background
At present, in the processing of high-precision stepped shaft parts, the processing time, cost and quality cannot be well balanced all the time, and a plurality of procedures are required to be directly converted back and forth, and expensive equipment is also required to ensure the precision and the surface roughness of the parts.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to solve the defect that above-mentioned prior art exists, provide flat grinder external grinding device, can realize the rapid tooling of excircle, reduce the process of clamping.
The utility model adopts the following technical scheme:
the utility model discloses a flat grinder external grinding device, including slip apex seat, bottom plate, fixed apex seat, motor mounting panel, keyway.
The base of the sliding center seat is fixed in the key groove of the bottom plate through a key and a screw, the sliding center seat is composed of a movable center I, a Morse taper sleeve, a spring, a base, a handle and a sliding center seat body, the tail portion of the movable center is in standard Morse taper and is tightly matched with a Morse taper hole in the Morse taper sleeve, and the outer circle on the Morse taper sleeve is matched with the inner hole in the sliding center seat body in a stroke mode to meet tolerance requirements, so that the position of the center after clamping is completed each time meets the tolerance requirements. The spring is arranged between the Morse taper sleeve and the sliding tip seat body, and the sliding tip seat body is arranged on the base. The tail of the Morse taper sleeve is provided with a radial rotating shaft hole which is connected with the handle, and the Morse taper sleeve can slide in the positioning hole of the base by pressing the handle, so that the spring is pulled. During clamping, the handle is pressed, the Morse taper sleeve is pulled to move, the baffle on the Morse taper sleeve compresses the spring, the handle is loosened after the workpiece is placed at the position, the spring rebounds to apply a certain pretightening force to the workpiece, the pretightening force applied to the workpiece by the spring can be controlled by adjusting the compression amount of the spring, the workpiece is ensured not to move in a shaft, and the workpiece is not too tight, so that the friction force is too large.
The fixed center seat is arranged in a key groove of the bottom plate through a key, the fixed center seat consists of a movable center II, a bearing outer retaining ring, a bearing inner retaining ring, a bearing and a fixed center seat body, the tail part of the movable center II is of standard Morse taper and is tightly matched with a Morse taper hole in the fixed center seat body, and the movable center II is fixed on the fixed center seat body. The bearing inner retaining ring is connected to the fixed center seat body through screws, the bearing and the bearing outer retaining ring are installed outside the fixed center seat body respectively, a group of holes are formed in the bearing outer retaining ring, the distances between the holes and the rotating center are different, and the bearing outer retaining ring can adapt to step shaft parts with different turning radiuses. The bearing outer baffle ring is provided with an annular groove, a circular belt is placed in the annular groove and connected with a circular belt pulley of a motor to drive the bearing outer baffle ring to rotate, the motor is installed on a motor installation plate, and the motor installation plate is installed on a bottom plate through bolts and nuts.
The utility model has the advantages that:
the tool for processing and grinding the excircle by using the surface grinding machine enables tasks of multiple processes and multiple devices to be processed and finished in one device and one process of the surface grinding machine, greatly shortens processing time and cost, and can obtain better processing quality. The production cost of the tool is much lower than the purchase cost of high-precision equipment.
The tool can solve the contradiction among the processing time, cost and quality of cylindrical part products in the production and processing process, shorten the processing time and cost and improve the product quality of the parts.
The cylindrical grinding tool of the surface grinding machine is relatively simple and reasonable in structure, the surface does not need to be marked and aligned during part clamping, the machining difficulty is greatly simplified, meanwhile, the clamped parts can be more stable during machining, the consistency of the size precision of the machined parts is guaranteed, the efficiency of cutting machining can be improved, the qualified rate of finished parts can be improved, and the cost of machining stepped shaft parts is reduced.
The tool for processing and grinding the excircle by using the surface grinding machine enables the tasks of multiple processes and multiple devices to be processed and finished in one device and one process of the surface grinding machine, greatly shortens the processing time and cost, and can obtain better processing quality. The production cost of the tool is much lower than the purchase cost of high-precision equipment.
The tool for grinding the excircle of the surface grinding machine consists of four parts: a sliding tip seat, a bottom plate, a fixed tip seat and a motor. The tool mainly uses a device which can enable the processed part to rotate around the rotating axis of the processed part, so that the original grinding machine equipment which only can grind planes can grind the tool of the stepped shaft parts, the processing efficiency is improved, and the product economy is improved.
The utility model has the advantages of simple and reasonable design, simple to use, convenience can effectively improve the machining efficiency of step axle class part, shortens the processing cycle, and processing economy is outstanding, through the mode of flat grinder dress additional, realizes grinding excircle part, the part that the processing technology is complicated.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the sliding nose cup;
FIG. 3 is a schematic view of the structure of the stationary tip seat.
In the figure: 1-sliding top seat, 2-bottom plate, 3-fixed top seat, 4-motor, 5-motor mounting plate and 6-key groove;
101-a movable center I, 102-a Morse taper sleeve, 103-a spring, 104-a base, 105-a handle and 106-a sliding center seat body;
301-a movable center II, 302-a bearing outer retaining ring, 303-a bearing inner retaining ring, 304-a bearing, 305-a fixed center seat body and 306-a hole.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention are clearly and completely described below, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1-3, the cylindrical grinding device of the surface grinder of the present invention comprises a sliding center base 1, a bottom plate 2, a fixed center base 3, and a motor 4.
As shown in fig. 2, the sliding center seat 1 is fixed in the key groove 6 of the bottom plate 2 through a key and a screw, the sliding center seat 1 is composed of a movable center i 101, a morse taper sleeve 102, a spring 103, a base 104, a handle 105 and a sliding center seat body 106, the tail of the movable center i 101 is of a standard morse taper, the tail of the movable center i 101 is tightly matched with a morse taper hole in the morse taper sleeve 102, and the outer circle on the morse taper sleeve 102 is matched with the inner hole stroke on the sliding center seat body 106 to meet tolerance requirements, so that the position of the center after each clamping is completed meets the tolerance requirements. The spring 103 is mounted between the morse taper sleeve 102 and the sliding nose seat body 106, and the sliding nose seat body 106 is mounted on the base 104. The tail of the Morse taper sleeve 102 is provided with a radial rotating shaft hole which is connected with a handle 105, and the Morse taper sleeve 102 can slide in the positioning hole of the base 104 by pressing the handle 105, thereby pulling the spring 103. During clamping, the handle 105 is pressed to pull the Morse taper sleeve 102 to move, the baffle on the Morse taper sleeve 102 compresses the spring 103, the handle 105 is loosened after a workpiece is placed at a position, the spring 103 rebounds to exert a certain pretightening force on the workpiece, the pretightening force exerted on the workpiece by the spring 103 can be controlled by adjusting the compression amount of the spring 103, and the workpiece is ensured not to move on a shaft and too tight to cause overlarge friction force.
As shown in fig. 3, the fixed center base 3 is installed in the key groove 6 of the bottom plate 2 by a key, the fixed center base 3 is composed of a movable center ii 301, a bearing outer retaining ring 302, a bearing inner retaining ring 303, a bearing 304 and a fixed center base body 305, the tail portion of the movable center ii 301 has a standard morse taper and is tightly matched with a morse taper hole on the fixed center base body 305, so that the movable center ii 301 is fixed on the fixed center base body 305. The bearing inner baffle ring 303 is connected to the fixed center seat body 305 through screws, the outer part of the bearing inner baffle ring 303 is respectively provided with a bearing 304 and a bearing outer baffle ring 302, the bearing outer baffle ring 302 is provided with a group of holes 306, and the radius of the holes 306 from the rotation center is different, so that the bearing inner baffle ring can adapt to step shaft parts with different turning radii. The bearing outer baffle ring 302 is provided with an annular groove, a circular belt is placed in the annular groove and is connected with a circular belt pulley of the motor 4 to drive the bearing outer baffle ring 302 to rotate, the motor 4 is installed on the motor installation plate 5, and the motor installation plate 5 is installed on the bottom plate 2 through bolts and nuts.
The utility model discloses a working process:
firstly, the bottom plate 2 is arranged on a magnetic platform of a surface grinding machine, and the side surface of the bottom plate 2 is aligned by a meter.
The centre on the sliding centre seat 1 and the centre on the fixed centre seat 3 are used for propping against the machined stepped shaft parts, the motor 4 rotates to drive the belt pulley to rotate, then the machine core chuck clamped on the parts is driven to rotate, and finally the machined parts are driven to rotate around the two centres.
A handle 105 is arranged at the rear part of the sliding center seat 1, so that a part can be conveniently clamped during machining, certain pretightening force is applied through a spring 103, the stepped shaft part can be tightly clamped by centers at two ends, the stepped shaft part rotates around the axis of a center hole, the machined part is more reliable, the consistency of a product is improved, and the reliability of a positioning tool is improved. If the early warning force applied by the spring 103 is too small, the stepped shaft part cannot rotate tightly around the two tip holes during rotation, and the machined product is scrapped.
If the pretightening force applied by the spring 103 is too large, the clamping of the machined step shaft parts is difficult, the abrasion of the center hole is accelerated, and the finally machined parts are scrapped due to the fact that the center hole is abraded too fast in long-time grinding.
The bearing 304 is arranged in the middle of the bearing outer retaining ring 302 on the fixed tip seat 3 to reduce friction force, so that the tool can be stably used for a long time. There is a set of hole 305 on bearing outer fender ring 302, and the radius diverse of hole distance centre of rotation can adapt to different radius of gyration's step axle class part, drives different radius of gyration's core chuck, makes this frock increase the commonality, can process the step axle class part of certain limit.
There is a slip keyway 6 on bottom plate 2, inlays into two keys on slip apex seat 1 and fixed apex seat 3, lets slip apex seat 1 and fixed apex seat 3 can slide in keyway 6 on bottom plate 2, is used for adjusting the distance of clamping, adapts to the different length requirement of being processed ladder axle class part, has certain commonality for be suitable for the part of different length.
Motor type selection and power check:
1. design requires parameters and conditions:
workpiece (rotary joint) rotation speed: 200rpm
Materials: 30CrMnSiA
Feed amount: 0.002mm
Grinding wheel material: single crystal corundum medium hard
2. Calculation of the grinding force required for grinding a rotary joint
The grinding force main motion is simply calculated according to the formula:
Fttangential grinding force
CtGrinding coefficient 22
vωWorkpiece circumference feed speed (m/min) 200rpm 18mm 3.6m/min
apGrinding depth (mm) of 0.002mm
apGrinding depth (mm) of 0.002mm
vsLine speed (m/s) n (rpm) pi D (m)/60 36.65(m/s)
The result is substituted into the following results:
Ft＝5.8N
because the cutting force in other directions is far less than FtSo the cutting forces in the other directions are not calculated here.
3. Motor supply
The parameters of a motor and a speed reducer are selected:
power: 6W rotating speed: 1300rpm speed ratio: 7.5
P＝FV ①
T＝FR ②
V2 pi R n (sec)/2 pi R n (min)/60 pi R n min/30 tri (sec)
And the generation II is:
p ═ F ═ V ═ T/R ═ pi R ═ n (min)/30 ═ pi/30 ═ T · n (min)
Power (W), torque (Nm), and rpm (n) ═ rpm (revolutions per minute)
When the unit of P is converted into KW, the following formula is obtained:
P*1000＝π/30*T*n30000/π*P＝T*n
30000/3.1415926*P＝T*n
9550*P＝T*n
calculating to obtain: t0.33 Nm
F＝T/R*2＝36(N)
n(max)＝1300/7.5*2＝346.7rpm(max)
Calculating to obtain: t0.33 Nm
F＝T/R*2＝36(N)
n(max)＝1300/7.5*2＝346.7rpm(max)
Calculating to obtain:
the motor drives the rotary joint to rotate, and the maximum grinding force can be borne by 36N.
The speed regulating range of the rotating speed is 0-346.7rpm
3. Conclusion
The maximum force which can be provided by the motor is calculated to be 36N, which is greater than the grinding force F generated when grinding the rotary jointtIs 5.8N. The speed regulating range of the rotating speed is 0-346.7 rpm. All meet the assumed requirements, so a motor with the power of 6w and the rotating speed of 1300rpm is selected, and a speed reducer with the speed ratio i of 7.5 is selected.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (2)
1. The cylindrical grinding device of the surface grinding machine is characterized by comprising a sliding center seat, a bottom plate, a fixed center seat, a motor mounting plate and a key groove;
the base of the sliding center seat is fixed in a key groove of the bottom plate through a key and a screw, the sliding center seat consists of a movable center I, a Morse taper sleeve, a spring, a base, a handle and a sliding center seat body, the tail part of the movable center is in standard Morse taper, the movable center is tightly matched with a Morse taper hole on the Morse taper sleeve, an excircle on the Morse taper sleeve is matched with an inner hole stroke on the sliding center seat body, the spring is installed between the Morse taper sleeve and the sliding center seat body, and the sliding center seat body is installed on the base;
the fixed center seat is installed in a key groove of the bottom plate through a key, the fixed center seat is composed of a movable center II, a bearing outer retaining ring, a bearing inner retaining ring, a bearing and a fixed center seat body, the tail part of the movable center II is standard Morse taper and is in close fit with the Morse taper hole in the fixed center seat body, the movable center II is fixed on the fixed center seat body, the bearing inner retaining ring is connected to the fixed center seat body through a screw, the bearing and the bearing outer retaining ring are installed outside the fixed center seat body respectively, a group of holes are formed in the bearing outer retaining ring, an annular groove is formed in the bearing outer retaining ring, a circular belt is placed in the bearing outer retaining ring and is connected with a circular belt pulley of the motor to drive the bearing outer retaining ring to rotate, the motor is installed on a motor installation plate, and the motor installation plate is installed on the bottom plate through.
2. The cylindrical grinding device of the surface grinder as claimed in claim 1, wherein the holes on the bearing outer retainer ring have different radiuses from the rotation center, and can be adapted to installation of stepped shaft parts with different turning radiuses.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021517731.0U CN213197068U (en) | 2020-07-28 | 2020-07-28 | Cylindrical grinding device of surface grinding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021517731.0U CN213197068U (en) | 2020-07-28 | 2020-07-28 | Cylindrical grinding device of surface grinding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213197068U true CN213197068U (en) | 2021-05-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021517731.0U Active CN213197068U (en) | 2020-07-28 | 2020-07-28 | Cylindrical grinding device of surface grinding machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213197068U (en) |
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2020
- 2020-07-28 CN CN202021517731.0U patent/CN213197068U/en active Active
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