CN211387658U

CN211387658U - Universal mechanical camshaft central hole drilling machine

Info

Publication number: CN211387658U
Application number: CN201921646914.XU
Authority: CN
Inventors: 胡艾滔
Original assignee: Chongqing Jiufang Casting Co ltd
Current assignee: Chongqing Jiufang Casting Co ltd
Priority date: 2019-09-29
Filing date: 2019-09-29
Publication date: 2020-09-01
Anticipated expiration: 2029-09-29

Abstract

The utility model belongs to the technical field of drilling equipment for machining, and discloses a universal mechanical camshaft center hole drilling machine, which comprises a workbench and a drilling machine, wherein four vertex angles at the bottom of the workbench are respectively provided with a support post, the support posts are hinged with a fixed block by hinges, a positioning plate is vertically connected on the support posts in a sliding manner and is positioned below the fixed block, and the positioning plate is provided with a positioning hole; the workbench is provided with a mounting hole coaxial with the positioning hole and an opening communicated with the mounting hole; the upper surface of the workbench is fixed with a mounting rack, a cylinder is fixed on the mounting rack, the drilling machine is fixed on a push rod of the cylinder, and a drill bit of the drilling machine is coaxial with the mounting hole. The problem of among the prior art clamping drilling machine's drill bit and the difficult centering of the main shaft terminal surface of camshaft, lead to drilling precision low is solved.

Description

Universal mechanical camshaft central hole drilling machine

Technical Field

The utility model belongs to the technical field of drilling equipment for machining, concretely relates to general machinery camshaft centre bore rig.

Background

The general mechanical camshaft is an important part of a piston engine and is mainly used for controlling the opening and closing of an air valve. The existing drilling device comprises a workbench, a clamping tool arranged on the workbench and a drilling machine positioned above the workbench, wherein a camshaft is fixed by the clamping tool, and then the drilling machine is used for drilling. However, after the camshaft is clamped, the camshaft is not easy to align with a drilling machine, so that a drilled hole deviates from the center of the camshaft, and further the drilling precision is low. Therefore, the application improves the existing drilling device and can ensure high drilling precision.

SUMMERY OF THE UTILITY MODEL

The utility model discloses it is anticipated to provide a general machinery camshaft centre bore rig to solve the difficult centering of drill bit of drilling machine behind the prior art clamping and the main shaft terminal surface of camshaft, lead to the problem that drilling accuracy is low.

In order to achieve the purpose, the utility model provides the following technical scheme, which comprises a workbench and a drilling machine, wherein four top corners of the bottom of the workbench are respectively provided with a pillar, the pillars are hinged with a fixed block by hinges, the pillars are vertically and slidably connected with a positioning plate, the positioning plate is positioned below the fixed block, and the positioning plate is provided with a positioning hole; the workbench is provided with a mounting hole coaxial with the positioning hole and an opening communicated with the mounting hole; the upper surface of the workbench is fixed with a mounting rack, a cylinder is fixed on the mounting rack, the drilling machine is fixed on a push rod of the cylinder, and a drill bit of the drilling machine is coaxial with the mounting hole.

The beneficial effects of the technical scheme are as follows:

1. by coaxially arranging the positioning hole, the mounting hole and the drill bit of the drilling machine, the main shaft of the camshaft and the drill bit can be automatically centered after the camshaft is positioned, so that the time spent on adjustment is saved, and the drilling precision is also improved;

2. by using the device provided by the technical scheme, the camshaft can be quickly installed and positioned, the camshaft is clamped into the installation hole through the opening, the gear disc at the upper part is positioned on the workbench, and the positioning plate is slid at the same time, so that the other end of the camshaft is positioned in the positioning hole of the installation plate, and the centering is further realized; then the fixed block is rotated, so that the fixed block downwards presses the gear disc at the lower part, and the camshaft is fixed and centered; the whole process is very quick, and the positioning and centering synchronization can be realized, so that the clamping time is saved.

Furthermore, an auxiliary plate is fixed on the support and positioned between the fixed block and the positioning plate, a placing hole coaxial with the mounting hole and a bayonet communicated with the placing hole are formed in the auxiliary plate, and the bayonet and the opening are overlapped in the vertical direction.

Has the advantages that: set up the accessory plate and can support the toothed disc of lower part, avoid the toothed disc to continuously receive the decurrent power of fixed block and cause the condition of damage to appear.

Furthermore, the upper surface of the workbench is also rotatably connected with a positioning gear, the positioning gear is provided with a pin hole, the workbench is provided with a fixing hole matched with the pin hole, and a positioning pin is arranged in the pin hole.

Has the advantages that: through the meshing of the gear plate of positioning gear and camshaft, recycle the locating pin and fix the positioning gear, when can avoiding drilling, the camshaft takes place to rotate, and the cooperation locating piece can avoid the camshaft to take place to rock.

Further, the mounting frame is also rotatably connected with a rotating shaft, the bottom of the rotating shaft is fixedly provided with a polishing wheel, and the polishing wheel is a cam; the device also comprises a driving piece for driving the rotating shaft to rotate.

Has the advantages that: the camshaft needs to have higher dimensional accuracy, smaller surface roughness and enough rigidity, therefore, after the camshaft is machined, the camshaft needs to be polished, and during polishing, another device needs to be used, so that the camshaft needs to be clamped again, the time spent in the mode is longer, and the precision of the camshaft is influenced by repeated clamping. Grinding wheels are arranged on the drilling machine, so that grinding and polishing of the end face of the camshaft can be realized, the clamping times during camshaft machining are reduced, and further the damage to the camshaft is reduced.

Further, the driving piece is a driving motor fixed on the mounting frame.

Has the advantages that: the grinding wheel is driven to rotate by the driving motor, so that the use is very convenient.

Further, the driving member includes a driving gear coaxially fixed to the rotary shaft and a driving gear fixed to the rotary shaft of the drilling machine, and the driving gear is engaged with the driving gear.

Has the advantages that: the driving gear is meshed with the driving gear, so that the driving wheel is driven to rotate by the rotating shaft, the grinding wheel can be matched with the drill bit to be ground, and when the drill bit moves upwards after being ground, the driving gear is meshed with the driving gear, and the driving grinding wheel is driven to rotate. In such a way, the process of drilling can be matched, and polishing is carried out after the drilling is finished; and the starting of the grinding wheel does not need to be adjusted by self, so that the operation procedures of operators can be reduced.

Furthermore, the number of the fixed blocks is 2, and the 2 fixed blocks are respectively positioned on two diagonal struts.

Has the advantages that: set up the fixed block into 2, and be located the diagonal pillar, can make the fixed block even to the power of camshaft location, avoid the camshaft perk.

Furthermore, the number of the fixed blocks is 4.

Has the advantages that: the fixed block sets up to 4, can make the location effect better.

Furthermore, the bottom of the fixed block is provided with a cushion pad.

Has the advantages that: the cushion can avoid the fixed block to contact with the gear plate of camshaft's rigidity, reduces the impaired probability of gear plate.

Further, the buffer pad is a silica gel pad, a rubber pad or a spongy cushion.

Has the advantages that: the silica gel pad, the rubber pad and the spongy cushion have certain elastic deformation capacity and can play a role in buffering the cushion.

Drawings

Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention;

FIG. 2 is a schematic structural view of the worktable of FIG. 1;

fig. 3 is a schematic structural view of a driving member portion in embodiment 2 of the present invention.

Detailed Description

The following is further detailed by way of specific embodiments:

reference numerals in the drawings of the specification include: the grinding machine comprises a workbench 1, a mounting hole 11, an opening 12, an auxiliary plate 2, a placing hole 21, a positioning plate 3, a positioning hole 31, a fixing block 4, a cylinder 5, a drilling machine 51, a driving gear 511, a rotating shaft 6, a grinding wheel 61, a driving gear 62, a positioning gear 7 and a cam shaft 8.

Example 1:

a general mechanical camshaft center hole drilling machine is basically shown in figure 1 and comprises a workbench 1 and a drilling machine 51, and as shown in figure 2, a mounting hole 11 and an opening 12 communicated with the mounting hole 11 are arranged on the workbench 1, and the mounting hole 11 and the opening 12 are through holes; the right part of the workbench 1 is also rotatably connected with a positioning gear 7, the bottom of the positioning gear 7 is fixed with a central shaft, the workbench 1 is provided with a rotating hole matched with the central shaft, and the central shaft is rotatably connected in the rotating hole. The positioning gear 7 is provided with a pin hole, the workbench 1 is provided with a fixing hole matched with the pin hole, and a positioning pin is arranged in the pin hole. The positioning gear 7 can be positioned by rotating the positioning gear 7 to align the pin hole with the fixing hole and inserting the positioning pin.

The bottom of the workbench 1 is provided with four pillars, the pillars are sequentially provided with a fixed block 4, an auxiliary plate 2 and a positioning plate 3 from top to bottom, the fixed block 4 is provided with 2 or 4 blocks, 4 blocks are arranged in the embodiment, and the fixed blocks 4 are respectively hinged on the 4 pillars through hinges; the bottom of fixed block 4 is fixed with the blotter, and the blotter is one of silica gel pad, rubber pad or foam-rubber cushion, uses the rubber pad in this implementation. The auxiliary plate 2 is fixed on the support, a placing hole 21 coaxial with the mounting hole 11 and a bayonet communicated with the placing hole 21 are arranged on the auxiliary plate 2, and the placing hole 21 and the bayonet are through holes; the placement hole 21 and the mounting hole 11 and the bayonet and the opening 12 are vertically coincident. A vertical sliding groove is formed in the pillar, and a sliding block in sliding fit with the vertical direction is arranged on the positioning plate 3, so that the positioning plate 3 can slide along the vertical direction; and the limiting block is clamped with the sliding groove. The positioning plate 3 is provided with a positioning hole 31 coaxial with the mounting hole 11, and the positioning hole 31 is a blind hole.

The upper surface of the workbench 1 is further welded with a mounting frame, a cylinder 5 is fixed on the mounting frame, a push rod of the cylinder 5 is arranged downwards, a drilling machine 51 is fixed on the push rod of the cylinder 5, and a drill bit of the drilling machine 51 is coaxial with the mounting hole 11. The mounting bracket is rotatably connected with a rotating shaft 6, the rotating shaft 6 is located on the left side of the air cylinder 5, a polishing wheel 61 is fixed at the bottom of the rotating shaft 6, and the polishing wheel 61 is a cam and used for polishing the end face of the main shaft of the cam shaft 8. The driving part is a driving motor fixed on the mounting frame.

The specific implementation process is as follows:

the camshaft 8 is snapped into the mounting hole 11 and the placement hole 21 through the opening 12 and the bayonet, and the two gear disks are positioned on the table 1 and the auxiliary plate 2, respectively. And then the positioning plate 3 is upwards slid, so that the main shaft of the camshaft 8 is positioned in the positioning hole 31, and the camshaft 8 is centered. When the camshaft 8 is clamped, a gear disc on the upper part of the camshaft 8 is gradually meshed with the positioning gear 7, after the main shaft of the camshaft 8 is centered, the positioning gear 7 is rotated, so that fixing holes in the pin hole workbench 1 on the positioning gear 7 are communicated, and then a positioning pin is inserted for fixing, so that the camshaft 8 is prevented from rotating; and rotating the fixing block 4 again to enable the fixing block 4 to be located on a gear disc below the camshaft 8 and to tightly press the gear disc, so that the camshaft 8 is fixed.

After the camshaft 8 is positioned, the cylinder 5 and the drilling machine 51 are started, so that the cylinder 5 drives the drilling machine 51 to move downwards, and at the moment, the drill bit of the drilling machine 51 is coaxial with the main shaft of the camshaft 8, and a central hole can be drilled. After drilling, the cylinder 5 drives the drilling machine 51 to move upwards, and then the driving motor is started, so that the driving motor drives the rotating shaft 6 to rotate, further drives the polishing wheel 61 to rotate, and polishes the end face of the main shaft of the camshaft 8.

Example 2:

this embodiment differs from embodiment 1 only in that, as shown in fig. 3, the driving member includes a driving gear 62 disposed coaxially with the rotary shaft 6 and a driving gear 511 disposed coaxially with the rotary shaft of the drill 51, and the driving gear 511 is engageable with the driving gear 62. When drilling, the air cylinder 5 drives the drilling machine 51 to move downwards, so that the driving gear 511 is separated from the driving gear 62, and the drill bit moves downwards to drill. After drilling, the cylinder 5 drives the drilling machine 51 to move upwards, so that the driving gear 511 is gradually meshed with the driving gear 62, and drives the rotating shaft 6 to rotate after meshing, so that the grinding wheel 61 rotates to grind and polish the end face of the main shaft of the camshaft 8.

For those skilled in the art, without departing from the technical solution of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the patent and the practicability of the patent.

Claims

1. General machinery camshaft centre bore rig, including workstation and drilling machine, four apex angle departments of workstation bottom all are equipped with pillar, its characterized in that: a fixing block is hinged on the strut by a hinge, a positioning plate is vertically connected on the strut in a sliding manner and is positioned below the fixing block, and a positioning hole is formed in the positioning plate; the workbench is provided with a mounting hole coaxial with the positioning hole and an opening communicated with the mounting hole; the upper surface of the workbench is fixed with a mounting rack, a cylinder is fixed on the mounting rack, the drilling machine is fixed on a push rod of the cylinder, and a drill bit of the drilling machine is coaxial with the mounting hole.

2. The universal mechanical camshaft center hole drill as claimed in claim 1, wherein: an auxiliary plate is further fixed on the support and located between the fixing block and the positioning plate, a placing hole coaxial with the mounting hole and a bayonet communicated with the placing hole are formed in the auxiliary plate, and the bayonet and the opening are overlapped in the vertical direction.

3. The universal mechanical camshaft center hole drill as claimed in claim 2, wherein: the upper surface of the workbench is also rotatably connected with a positioning gear, the positioning gear is provided with a pin hole, the workbench is provided with a fixing hole matched with the pin hole, and the pin hole is internally provided with a positioning pin.

4. The universal mechanical camshaft center hole drill as claimed in claim 3, wherein: the mounting frame is also rotatably connected with a rotating shaft, the bottom of the rotating shaft is fixedly provided with a polishing wheel, and the polishing wheel is a cam; the device also comprises a driving piece for driving the rotating shaft to rotate.

5. The universal mechanical camshaft center hole drill as claimed in claim 4, wherein: the driving piece is a driving motor fixed on the mounting frame.

6. The universal mechanical camshaft center hole drill as claimed in claim 4, wherein: the driving part comprises a driving gear coaxially fixed on the rotating shaft and a driving gear fixed on the rotating shaft of the drilling machine, and the driving gear can be meshed with the driving gear.

7. The universal mechanical camshaft center hole drill as claimed in any one of claims 1 to 6, wherein: the fixed block is 2, and 2 fixed blocks are located two diagonal pillars respectively.

8. The universal mechanical camshaft center hole drill as claimed in any one of claims 1 to 6, wherein: the number of the fixed blocks is 4.

9. The universal mechanical camshaft center hole drill as claimed in claim 8, wherein: and a buffer cushion is arranged at the bottom of the fixed block.

10. The universal mechanical camshaft center hole drill as claimed in claim 9, wherein: the buffer pad is a silica gel pad, a rubber pad or a spongy cushion.