CN211867481U - Special fixture for grinding carbon commutator - Google Patents
Special fixture for grinding carbon commutator Download PDFInfo
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- CN211867481U CN211867481U CN201921683724.5U CN201921683724U CN211867481U CN 211867481 U CN211867481 U CN 211867481U CN 201921683724 U CN201921683724 U CN 201921683724U CN 211867481 U CN211867481 U CN 211867481U
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- carbon commutator
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Abstract
A special fixture for grinding a carbon commutator comprises positioning seats, two fixing seats and two clamping arms, wherein the two fixing seats are symmetrically arranged on one side of the positioning seats, the two clamping arms are hinged to one ends of the two clamping arms, a rotating shaft is arranged at one end of each clamping arm and is vertically fixed on the positioning seat, through holes are horizontally arranged on the two clamping arms in a penetrating manner, positioning holes are vertically arranged on the two clamping arms in a penetrating manner, the positioning holes are communicated with the through holes, positioning shafts are arranged in the positioning holes, limiting blocks are arranged at the upper end and the lower end of each positioning shaft, screw holes are horizontally arranged on the two positioning shafts, the directions of screw threads on the two screw holes are opposite, the two positioning shafts are connected with a screw rod through screw hole threads, the screw rod penetrates through the through holes on the two clamping arms, the two ends of the screw rod are, so that the centers of the positioning axial screw rods on the two clamping arms move to drive the two clamping arms to clamp and fix the carbon commutator.
Description
Technical Field
The utility model belongs to the technical field of the anchor clamps of polishing, concretely relates to carbon commutator grinding special fixture.
Background
The carbon commutator is one of the components of the fuel power electric injection system, the electric injection fuel pump is arranged in the fuel tank to mainly supply power fuel, the main material of the traditional commutator product is oxygen-free copper or silver-copper alloy, because the fuel pump motor is soaked in gasoline for working for a long time, particularly in recent years, the mixed fuel of ethanol gasoline, methanol gasoline and the like is popularized and used at home and abroad, and the service life of the traditional copper commutator is greatly shortened because of serious electric corrosion. Therefore, the quality of the carbon commutator directly influences the normal work of the fuel pump, the end face of the carbon commutator needs to be ground after being formed during machining so as to remove burrs, and corresponding clamps need to be adopted to fix the carbon commutator during grinding.
SUMMERY OF THE UTILITY MODEL
To the above problem, the utility model discloses a carbon commutator grinding special fixture.
The specific technical scheme is as follows:
a special fixture for grinding a carbon commutator comprises a positioning seat, two fixing seats and two clamping arms, wherein the positioning seat is provided with a positioning lug for penetrating through a carbon commutator mounting hole, the number of the fixing seats is two, the two fixing seats are symmetrically arranged on one side of the positioning seat, the two clamping arms are positioned between the two fixing seats, one ends of the two clamping arms are hinged with a rotating shaft, one end of the rotating shaft is vertically fixed on the positioning seat, the other ends of the two clamping arms are positioned above the positioning lug and clamp the side wall of the carbon commutator, the two clamping arms are horizontally penetrated and provided with through holes, the two through holes are symmetrically arranged, the two clamping arms are vertically penetrated and provided with positioning holes, the positioning holes are communicated with the through holes, positioning shafts are movably arranged in the positioning holes, the upper ends and the lower ends of the positioning shafts are provided with limiting blocks, and screw holes are horizontally arranged on the positioning shafts positioned in the two clamping, two screw inner wall is last screw thread opposite direction, the position of screw with the position of through-hole is corresponding, and two location axles pass through screw threaded connection has a lead screw, the lead screw runs through on two centre gripping arms the through-hole, the both ends of lead screw respectively with two fixing base swing joint, and the lead screw is located the one end connection of one of them fixing base and is equipped with the knob, through rotating the knob and drive the lead screw pivoted in for thereby the central removal of location axial lead screw drives two centre gripping arms and carries out the centre gripping fixedly to the carbon commutator on two centre gripping arms.
Furthermore, the through hole is waist hole-shaped, and the size of the through hole is larger than that of the screw rod.
Furthermore, the opposite ends of the two clamping arms at the positioning lug are provided with clamping grooves with V-shaped structures.
Furthermore, the side wall of the clamping groove is provided with anti-skid grains.
Furthermore, the rotating shaft is positioned at the upper end and the lower end of the clamping arm and is provided with a limiting seat.
Furthermore, a connecting line between the positioning lug and the rotating shaft is perpendicular to the screw rod.
The utility model has the advantages that:
the utility model discloses in through rotating the knob and drive the lead screw pivoted in for thereby the center removal of location axial lead screw on two centre gripping arms drives two centre gripping arms and carries out quick centre gripping fixedly to the carbon commutator on the lug of location, and fixed effect is better, and fixed mode is more convenient, has improved machining efficiency greatly.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a side view of the present invention.
Fig. 3 is a cross-sectional view of the present invention.
Description of the reference numerals
The positioning seat 1, the positioning bump 11, the fixing seat 2, the rotating shaft 3, the limiting seat 31, the clamping arm 4, the through hole 41, the positioning hole 42, the positioning shaft 43, the screw hole 431, the limiting block 432, the screw rod 44, the knob 441, the clamping groove 45 and the anti-skid thread 451.
Detailed Description
For making the technical scheme of the utility model clear more clearly and definitely, it is right to combine the drawing below the utility model discloses further describe, any is right the utility model discloses technical scheme's technical characteristic carries out the scheme that equivalent replacement and conventional reasoning reachs and all falls into the utility model discloses protection scope. The utility model discloses in the fixed connection who mentions, fixed setting is the general connected mode among the mechanical field, and welding, bolt and nut are connected and the screw connection is all can.
In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description of the present invention and for simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.
A special fixture for grinding a carbon commutator comprises a positioning seat, two fixing seats and two clamping arms, wherein the positioning seat is provided with a positioning lug for penetrating through a carbon commutator mounting hole, the number of the fixing seats is two, the two fixing seats are symmetrically arranged on one side of the positioning seat, the two clamping arms are positioned between the two fixing seats, one ends of the two clamping arms are hinged with a rotating shaft, one end of the rotating shaft is vertically fixed on the positioning seat, the other ends of the two clamping arms are positioned above the positioning lug and clamp the side wall of the carbon commutator, the two clamping arms are horizontally penetrated and provided with through holes, the two through holes are symmetrically arranged, the two clamping arms are vertically penetrated and provided with positioning holes, the positioning holes are communicated with the through holes, positioning shafts are movably arranged in the positioning holes, the upper ends and the lower ends of the positioning shafts are provided with limiting blocks, and screw holes are horizontally arranged on the positioning shafts positioned in the two, two screw inner wall is last screw thread opposite direction, the position of screw with the position of through-hole is corresponding, and two location axles pass through screw threaded connection has a lead screw, the lead screw runs through on two centre gripping arms the through-hole, the both ends of lead screw respectively with two fixing base swing joint, and the lead screw is located the one end connection of one of them fixing base and is equipped with the knob, through rotating the knob and drive the lead screw pivoted in for thereby the central removal of location axial lead screw drives two centre gripping arms and carries out the centre gripping fixedly to the carbon commutator on two centre gripping arms.
Furthermore, the through hole is waist hole-shaped, and the size of the through hole is larger than that of the screw rod.
Furthermore, the opposite ends of the two clamping arms at the positioning lug are provided with clamping grooves with V-shaped structures.
Furthermore, the side wall of the clamping groove is provided with anti-skid grains.
Furthermore, the rotating shaft is positioned at the upper end and the lower end of the clamping arm and is provided with a limiting seat.
Furthermore, a connecting line between the positioning lug and the rotating shaft is perpendicular to the screw rod.
The working principle is as follows:
during operation, the carbon commutator is horizontally placed on the positioning seat, the positioning lug aligned with the mounting hole of the carbon commutator is positioned, and then the knob is rotated to drive the screw rod to rotate, so that the positioning shafts on the two clamping arms move towards the center of the screw rod to drive the two clamping arms to clamp and fix the side wall of the carbon commutator.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (6)
1. A special fixture for grinding a carbon commutator is characterized by comprising a positioning seat, two fixing seats and two clamping arms, wherein the positioning seat is provided with a positioning lug for penetrating through a carbon commutator installation hole, the number of the fixing seats is two, the two fixing seats are symmetrically arranged on one side of the positioning seat, the two clamping arms are positioned between the two fixing seats, one ends of the two clamping arms are hinged with a rotating shaft, one end of the rotating shaft is vertically fixed on the positioning seat, the other ends of the two clamping arms are positioned above the positioning lug and clamp the side wall of the carbon commutator, the two clamping arms are horizontally provided with through holes in a penetrating way, the two through holes are symmetrically arranged, the two clamping arms are provided with positioning holes in a penetrating way, the positioning holes are communicated with the through holes, positioning shafts are movably arranged in the positioning holes, and the upper ends and the lower ends of the positioning shafts are provided with limiting, the screw holes are horizontally formed in the positioning shafts in the two clamping arms, the screw holes are oppositely threaded on the inner walls of the screw holes, the positions of the screw holes correspond to the positions of the through holes, the two positioning shafts are connected with a lead screw through screw threads, the lead screw penetrates through the through holes in the two clamping arms, two ends of the lead screw are respectively movably connected with the two fixing seats, and one end, located on one of the fixing seats, of the lead screw is connected with a knob.
2. The carbon commutator grinding jig as claimed in claim 1, wherein the through hole is a waist hole, and the size of the through hole is larger than that of the lead screw.
3. The carbon commutator grinding jig as claimed in claim 1, wherein the opposite ends of the two clamping arms at the positioning projections are each provided with a clamping groove of a V-shaped configuration.
4. The carbon commutator grinding jig as claimed in claim 3, wherein the side walls of said holding grooves are provided with anti-slip patterns.
5. The carbon commutator grinding jig as claimed in claim 1, wherein the rotating shaft is provided with a stopper at upper and lower ends of the gripping arm.
6. The carbon commutator grinding jig as claimed in claim 1, wherein a line connecting the positioning projection and the rotation shaft is perpendicular to the lead screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921683724.5U CN211867481U (en) | 2019-10-10 | 2019-10-10 | Special fixture for grinding carbon commutator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921683724.5U CN211867481U (en) | 2019-10-10 | 2019-10-10 | Special fixture for grinding carbon commutator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211867481U true CN211867481U (en) | 2020-11-06 |
Family
ID=73240327
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921683724.5U Active CN211867481U (en) | 2019-10-10 | 2019-10-10 | Special fixture for grinding carbon commutator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211867481U (en) |
-
2019
- 2019-10-10 CN CN201921683724.5U patent/CN211867481U/en active Active
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