CN113635132B

CN113635132B - Automobile brake camshaft centre bore processing equipment

Info

Publication number: CN113635132B
Application number: CN202111035010.5A
Authority: CN
Inventors: 孔祥江
Original assignee: Shiyan Hongzhao Auto Accessories Industrial Co ltd
Current assignee: Shiyan Hongzhao Auto Accessories Industrial Co ltd
Priority date: 2021-09-04
Filing date: 2021-09-04
Publication date: 2022-07-22
Anticipated expiration: 2041-09-04
Also published as: CN113635132A

Abstract

The invention relates to the technical field of shaft machining equipment and discloses automobile brake camshaft center hole machining equipment which comprises a fixed seat, a machine tool and a camshaft, wherein a drill bit is fixedly sleeved on the machine tool, and a fixed box is fixedly installed on the fixed seat. Through the setting of piston plate, make when the drill bit drills the camshaft, the lathe promotes the piston plate to by removing, make the drill bit stretch into the camshaft gradually, obtain required centre bore, at the in-process of drill bit translation right, the lathe pushes away the piston plate right, pressurize the cutting fluid in the fixed box, can strengthen the cutting fluid to camshaft cold pressure, strengthen the cooling effect of camshaft left end, and simultaneously, can send the cutting fluid into the centre bore, guarantee to form the one deck lubricating film between drill bit and the camshaft, prevent centre bore surface fish tail, improve the quality of centre bore, and ensure to have the cutting fluid cooling to centre bore inside, effectively prevent the heat too high, form long-pending bits tumour.

Description

Automobile brake camshaft centre bore processing equipment

Technical Field

The invention relates to the technical field of shaft processing equipment, in particular to processing equipment for a central hole of an automobile brake camshaft.

Background

The camshaft is a widely used mechanical part, the manufacturing method of traditional camshaft has a variety, there are steel pipe internal expansion method, internal hydraulic pressure method, hot jacket method, powder metallurgy method, knurling connection method and press-fitting method etc., the camshaft that any kind of method was manufactured, all need to realize the processing requirement of every camshaft through the finish machining, for example at the terminal surface machining centre bore of camshaft, when processing these centre bores, usually install the camshaft on the lathe through frock clamp and process, in the prior art, mostly adopt horizontal machining center to process the centre bore of camshaft, but there are some inadequacies in the camshaft course of working, as follows:

when carrying out centre bore to the camshaft and adding man-hour, need utilize the cutting fluid to cool down drilling department, among the prior art, generally adopt plus injection pipe, spout the drill hole mouth, but, along with drilling is deep, outside cutting fluid pressure who sprays is not enough to cool down to camshaft inside, lead to aluminium bits to be heated to glue on the gib block in the course of working easily, cause the fish tail of interior control, the aluminium bits is discharged untimely, form long-pending bits tumour on the cutter surface, the processingquality who causes the camshaft centre bore is not good, and simultaneously, the drill bit is when camshaft contact and drilling, in the contact process, because under external and camshaft self material factor influences, take place to beat, and then drive the camshaft and beat, make the drilling direction take place the skew, lead to the straightness that hangs down of centre bore to reduce.

Disclosure of Invention

The invention provides the machining equipment for the central hole of the automobile brake camshaft, which has the advantages of good cooling effect and high machining quality and solves the problems in the background technology.

The invention provides the following technical scheme: a machining device for a center hole of an automobile brake camshaft comprises a fixed base, a machine tool and a camshaft, wherein a drill bit is fixedly sleeved on the machine tool, a fixed box is fixedly mounted on the fixed base, a piston plate is sleeved on the inner part of the fixed box, a rubber sleeve is movably sleeved on the piston plate and the inner part of the fixed box, the machine tool is movably connected with the piston plate, the rubber sleeve is movably sleeved with the machine tool, a clamp is fixedly mounted on the right side of the fixed box on the fixed base, the camshaft is movably sleeved with the clamp, the left end of the camshaft is movably sleeved with the fixed box, the left end of the camshaft is movably sleeved with the rubber sleeve in the fixed box, a fixed sleeve is uniformly and fixedly mounted on the clamp, an electromagnetic device is fixedly mounted in the fixed sleeve, a piston is movably mounted in the fixed sleeve, a magnet is fixedly mounted at the bottom of the piston, the bottom surface fixed mounting of piston has the spring, the bottom fixedly connected with briquetting of spring, the bottom swing joint of briquetting and fixed cover, the bottom and the camshaft swing joint of briquetting.

Preferably, the right side of the fixed box is uniformly and fixedly provided with an electromagnetic valve, the electromagnetic valve is fixedly connected with the left side of the fixed sleeve, and the inner cavity of the fixed sleeve is communicated with the inner cavity of the fixed box through the electromagnetic valve.

Preferably, a resistor strip is fixedly mounted on the left side of the bottom of the fixing sleeve, a contact is fixedly mounted on the top of the right side of the pressing block, and the resistor strip is electrically connected with the electromagnetic device.

Preferably, the right end of the bottom of the inner cavity of the fixed box is provided with an inclined hole, the fixed seat is internally provided with a slag storage box, and the inner cavity of the fixed box is communicated with the slag storage box through the inclined hole.

Preferably, the fixed sleeves are three and evenly distributed on the upper half part of the camshaft.

The invention has the following beneficial effects:

1. through the setting of piston plate, make when the drill bit drills the camshaft, the lathe promotes the piston plate to by removing, make the drill bit stretch into the camshaft gradually, obtain required centre bore, at the in-process of drill bit translation right, the lathe pushes away the piston plate right, pressurize the cutting fluid in the fixed box, can strengthen the cutting fluid to camshaft cold pressure, strengthen the cooling effect of camshaft left end, and simultaneously, can send the cutting fluid into the centre bore, guarantee to form the one deck lubricating film between drill bit and the camshaft, prevent centre bore surface fish tail, improve the quality of centre bore, and ensure to have the cutting fluid cooling to centre bore inside, effectively prevent the heat too high, form long-pending bits tumour.

2. Through the setting of solenoid valve, make the piston plate when to left right translation, in advancing the solenoid valve with the cutting hydraulic pressure in the fixed box, along with the drill bit is deep in the camshaft, the piston plate is big more to the pressure of cutting fluid, the cutting fluid that fills fixed cover is more, so the briquetting is big more to the pressure of camshaft, guarantee to the camshaft clamp force, prevent that it from following the drill bit and rotating together, guarantee the validity of drilling, and simultaneously, through the setting of resistance strip and contact, when making the camshaft take place the runout, drive the briquetting and upwards remove, and then the resistance value of access circuit diminishes, the electric current grow of fixed cover, and then through the pressure of piston increase to the briquetting, increase the pressure to the camshaft, the generator is beated and is continued to take place, effectively improve the stability of processing.

Drawings

FIG. 1 is a schematic front view of the structure of the present invention;

FIG. 2 is a schematic view of the invention at A-A in FIG. 1;

FIG. 3 is a schematic view of the present invention at B-B in FIG. 1;

FIG. 4 is an enlarged schematic view of the invention at C in FIG. 1.

In the figure: 1. a fixed seat; 2. a fixed box; 3. a piston plate; 4. a rubber sleeve; 5. a machine tool; 6. a drill bit; 7. a clamp; 8. a camshaft; 9. fixing a sleeve; 10. an electromagnetic device; 11. a piston; 12. an electromagnetic valve; 13. a spring; 14. briquetting; 15. an inclined hole; 16. a slag storage tank; 17. a contact; 18. a resistive strip.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

Referring to fig. 1-4, a central hole processing device for a brake camshaft of an automobile comprises a fixed base 1, a machine tool 5 and a camshaft 8, wherein a drill bit 6 is fixedly sleeved on the machine tool 5, a fixed box 2 is fixedly installed on the fixed base 1, a piston plate 3 is movably sleeved in the fixed box 2, rubber sleeves 4 are movably sleeved in the piston plate 3 and the fixed box 2, the machine tool 5 is movably connected with the piston plate 3, the rubber sleeves 4 are movably sleeved with the machine tool 5, a clamp 7 is fixedly installed on the fixed base 1 and positioned on the right side of the fixed box 2, the camshaft 8 is movably sleeved with a clamp 7, the left end of the camshaft 8 is movably sleeved with the fixed box 2, the left end of the camshaft 8 is movably sleeved with the rubber sleeves 4 in the fixed box 2, fixed sleeves 9 are uniformly and fixedly installed on the clamp 7, an electromagnetic device 10 is fixedly installed in the fixed sleeve 9, the utility model discloses a drill bit, including fixed cover 9, piston 11's bottom fixed mounting has magnet, piston 11's bottom fixed mounting has spring 13, the bottom fixedly connected with briquetting 14 of spring 13, briquetting 14 and fixed cover 9's bottom swing joint, the bottom and the camshaft 8 swing joint of briquetting 14 pass anchor clamps 7 and fixed box 2 respectively with camshaft 8, utilize fixed cover 9 to send the electromagnetic force and promote piston 11 to descend, pressurize briquetting 14, and then press from both sides tight camshaft 8, when boring the centre bore to camshaft 8's left end, at first fill up the cutting fluid to the inside of fixed box 2, lathe 5 drives drill bit 6 rotatory, and simultaneously, lathe 5 promotes piston plate 3 and by the removal for drill bit 6 stretches into camshaft 8 gradually, obtains required centre bore, and in-process that drill bit 6 translated right, lathe 5 pushes piston plate 3 right, the cutting fluid in the fixed box 2 is pressurized, so that the cold pressure of the cutting fluid on the camshaft 8 can be increased, the cooling effect of the left end of the camshaft 8 is improved, meanwhile, the cutting fluid can be fed into the central hole, a lubricating film can be formed between the drill bit and the camshaft 8, the surface of the central hole is prevented from being scratched, the quality of the central hole is improved, the cutting fluid is ensured to cool the inside of the central hole, the overhigh heat is effectively prevented, and built-up burrs are formed; the right side of the fixed box 2 is uniformly and fixedly provided with electromagnetic valves 12, the electromagnetic valves 12 are fixedly connected with the left side of the fixed sleeve 9, the inner cavity of the fixed sleeve 9 is communicated with the inner cavity of the fixed box 2 through the electromagnetic valves 12, when the piston plate 3 translates left and right, cutting fluid in the fixed box 2 is fed into the electromagnetic valves 12, along with the drilling bit 6 going deep into the camshaft 8, the pressure of the piston plate 3 on the cutting fluid is higher, the cutting fluid filled into the fixed sleeve 9 is more, and therefore the pressure of the pressing block 14 on the camshaft 8 is higher, the clamping force on the camshaft 8 is ensured, and the pressing block is prevented from rotating along with the drilling bit 6; a resistor strip 18 is fixedly installed on the left side of the bottom of the fixed sleeve 9, a contact 17 is fixedly installed on the top of the right side of the pressing block 14, the resistor strip 18 is electrically connected with the electromagnetic device 10, when the camshaft 8 makes radial run-out, the pressing block 14 is driven to move upwards, the resistance value of an access circuit is reduced, the current of the fixed sleeve 9 is increased, the pressure on the pressing block 14 is increased through the piston 11, the pressure on the camshaft 8 is increased, the run-out of a generator continues to occur, and the processing stability is effectively improved; inclined hole 15 has been seted up to the inner chamber bottom right-hand member of fixed case 2, storage case 16 has been seted up to the inside of fixing base 1, the inner chamber of fixed case 2 passes through inclined hole 15 and storage case 16 intercommunication, and when piston plate 3 translated right, can arrange the smear metal to storage case 16 through inclined hole 15, prevents that it from piling up in fixed case 2, causes to block piston plate 3.

The working principle and the clamping process are as follows: respectively penetrating a camshaft 8 through the right walls of a clamp 7 and a fixing box 2, electrifying a fixing sleeve 9, utilizing the electromagnetic force generated by the fixing sleeve 9 to push a piston 11 to descend, pressurizing a pressing block 14, further clamping the camshaft 8, allowing a drill bit 6 carried by a machine tool 5 to penetrate through a piston plate 3, and sleeving the machine tool 5 and the piston plate 3; drilling: firstly, the interior of the fixed box 2 is filled with cutting fluid, the machine tool 5 drives the drill bit 6 to rotate, meanwhile, the machine tool 5 pushes the piston plate 3 to move, so that the drill bit 6 gradually penetrates into the camshaft 8 to obtain a required central hole, the machine tool 5 pushes the piston plate 3 to the right in the process that the drill bit 6 translates to the right, the cutting fluid in the fixed box 2 is pressurized, the cold pressure of the cutting fluid to the camshaft 8 can be increased, the cooling effect of the left end of the camshaft 8 is enhanced, meanwhile, cutting fluid can be fed into the center hole, a layer of lubricating film can be formed between the drill bit and the camshaft 8, when the piston plate 3 moves horizontally leftwards and rightwards, the cutting fluid in the fixed box 2 is pressed into the electromagnetic valve 12, along with the drill bit 6 goes deep into the camshaft 8, the pressure of the piston plate 3 on the cutting fluid is higher, the cutting fluid filled into the fixing sleeve 9 is more, and the pressure of the pressing block 14 on the camshaft 8 is higher; fixed cover 9 has three and evenly distributed at the upper half of camshaft 8, carries out the elasticity pressurization to camshaft 8 about and above, guarantees to be stable to camshaft 8's four directions.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an automobile brake camshaft centre bore processing equipment, includes fixing base (1), lathe (5) and camshaft (8), fixed cover has connect drill bit (6), its characterized in that on lathe (5): the utility model discloses a fixed box of a lathe, including fixing base (1), piston plate (3) have been cup jointed in the inside activity of fixed box (2), rubber sleeve (4) have been cup jointed in the equal activity in inside of piston plate (3) and fixed box (2), lathe (5) and piston plate (3) swing joint, rubber sleeve (4) and lathe (5) activity are cup jointed, the right side fixed mounting who just lies in fixed box (2) on fixing base (1) has anchor clamps (7), camshaft (8) and anchor clamps (7) activity are cup jointed, the left end and the fixed box (2) activity of camshaft (8) are cup jointed, the left end and the inside rubber sleeve (4) activity of fixed box (2) of camshaft (8) are cup jointed, even fixed mounting has fixed cover (9) on anchor clamps (7), the inside fixed mounting of fixed cover (9) has electromagnetic means (10), a piston (11) is movably mounted inside the fixed sleeve (9), a magnet is fixedly mounted at the bottom of the piston (11), a spring (13) is fixedly mounted on the bottom surface of the piston (11), a pressing block (14) is fixedly connected to the bottom end of the spring (13), the pressing block (14) is movably connected with the bottom end of the fixed sleeve (9), and the bottom end of the pressing block (14) is movably connected with the cam shaft (8);

the even fixed mounting in right side of fixed case (2) has solenoid valve (12), the left side fixed connection of solenoid valve (12) and fixed cover (9), the inner chamber of fixed cover (9) passes through the inner chamber intercommunication of solenoid valve (12) and fixed case (2), the bottom left side fixed mounting of fixed cover (9) has resistance strip (18), the right side top fixed mounting of briquetting (14) has contact (17), resistance strip (18) and electromagnetic means (10) electric connection.

2. The apparatus for processing a center hole of an automotive brake camshaft according to claim 1, wherein: inclined hole (15) have been seted up to the inner chamber bottom right-hand member of fixed case (2), slag storage box (16) have been seted up to the inside of fixing base (1), the inner chamber of fixed case (2) passes through inclined hole (15) and slag storage box (16) intercommunication.

3. The center hole processing apparatus of an automobile brake camshaft according to claim 1, wherein: the fixed sleeves (9) are three and are uniformly distributed on the upper half part of the camshaft (8).