A kind of device for grinding camshafts
Technical field
The utility model relates to a kind of machinery processing apparatus, specifically, relates to a kind of device for grinding camshafts.
Background technology
Camshaft is adding man-hour, usually must on the central point at material axle two ends, roughing go out centre bore, so that camshaft is arranged on the processing of carrying out Cutting Process on the lathe, centre bore is the location benchmark of workpiece, and the form and position tolerance precision of its conical surface directly influences the crudy of workpiece.Because this centre bore is that roughing forms, so the form and position tolerance ratio of precision of the axiality of its two ends centre bore and the conical surface is relatively poor, when carrying out post-order process, camshaft can produce beat when being placed between the thimble of lathe rotation, cause the camshaft mass ratio produced relatively poor, percent defective is than higher.
The utility model content
Problem to be solved in the utility model is at above problem, provide a kind of easy to use, machining accuracy is high, a kind of device for grinding camshafts of good product quality.
For solving above technical problem, the technical scheme that the utility model adopted is: a kind of device for grinding camshafts, comprise support, and it is characterized in that: described support is provided with and is used for first grinding mechanism and second grinding mechanism that camshaft is ground.This structure can be simultaneously ground the centre bore at camshaft two ends.
The concrete prioritization scheme of second grinding mechanism, described second grinding mechanism comprises second bearing block, and described second bearing block is provided with hydraulic motor and milling bar, and described milling bar and hydraulic motor are in transmission connection, it is top that the end of described milling bar is provided with grinding, the top grinding sword that is provided with of described grinding.
Further prioritization scheme, described second bearing block is provided with pressed seat, and pressed seat is provided with rotating shaft, and rotating shaft is provided with operating grip and shift fork, and shift fork and milling bar are in transmission connection.
Further prioritization scheme is provided with splined shaft between described milling bar and the hydraulic motor, and shift fork is connected with splined shaft.After the preparatory stage or grinding end of the work of grinding, use this device can be used for adjusting the distance of grinding between sword and the camshaft, make the better effects if of grinding, can also avoid damage to grind sword and camshaft.
Further prioritization scheme is provided with spring between the described splined shaft and second bearing block.The elastic force of this spring itself can the assisted milling boom end the grinding sword well contact with camshaft, improved Grinding Quality.
Further again prioritization scheme, described support is provided with guide rail, and second bearing block is arranged on the guide rail, is provided with clamping device between second bearing block and the guide rail.Second grinding mechanism can move along guide rail, and with the needs of satisfied processing different length camshaft, and when processing the camshaft of equal length, this device is fixed bearing block and guide rail, and is convenient when dismounting and installation camshaft.
The concrete prioritization scheme of clamping device, described clamping device comprises the pull bar that is arranged between second bearing block and the guide rail, and the bottom of pull bar is provided with plug screw, and the top of pull bar has cavity, accommodates eccentric shaft in this cavity, and eccentric shaft is provided with operation handlebar.
The concrete prioritization scheme of first grinding mechanism, described first grinding mechanism comprises the clutch shaft bearing seat, and described clutch shaft bearing seat is provided with hydraulic motor and milling bar, and described milling bar and hydraulic motor are in transmission connection, it is top that the end of described milling bar is provided with grinding, the top grinding sword that is provided with of described grinding.
Further prioritization scheme, described clutch shaft bearing seat is arranged on the guide rail, is provided with clamping device between described clutch shaft bearing seat and the guide rail.First grinding mechanism can move along guide rail, is used with second grinding mechanism, to satisfy the needs of processing different length camshaft, uses more convenient.
The utility model is taked above technical scheme, has the following advantages:
(1) grinding mechanism can move along guide rail, and with the needs of satisfied processing different length camshaft, and when processing the camshaft of equal length, this device is fixed bearing block and guide rail, and is convenient when dismounting and installation camshaft.
(2) shift fork is connected with splined shaft, after the preparatory stage or grinding end of the work of grinding, can be used for adjusting the distance of grinding between sword and the camshaft, makes the better effects if of grinding, can also avoid damage to grind sword and camshaft.
(3) the grinding sword that the spring between splined shaft and second bearing block can the assisted milling boom end well contacts with camshaft, has improved machining accuracy and Grinding Quality.
The utility model is described in further detail below in conjunction with drawings and Examples.
Description of drawings
Accompanying drawing 1 is the structural representation of embodiment convexity wheel shaft lapping device in the utility model;
Accompanying drawing 2 is the structural representation of first grinding mechanism among the utility model embodiment;
Accompanying drawing 3 is the structural representation of second grinding mechanism among the utility model embodiment;
Accompanying drawing 4 is the structural representation of clamping device among the utility model embodiment.
Among the figure:
The 1-hydraulic motor, 2-bearing block, 3-bearing, 4-support set, the 5-milling bar, 6-spline housing, 7-spline, 8-locking nut, 9-grinds top, the 10-carriage, and the 11-camshaft, 12-grinds top, the 13-bearing block, 14-priming cup, 15-operating grip, 16-clamping device, the 17-rotating shaft, 18-pressed seat, 19-shift fork, 20-spring, the 21-splined shaft, 22-spline housing, 23-hydraulic motor, 24-bearing, the 25-pull bar, 26-eccentric shaft, 27-plug screw, the 28-limited block, 29-guide rail, 30-support, the 31-spline, 32-operation handlebar, 33-milling bar, the 34-clamping device, 35-operation handlebar, 36-support set
The specific embodiment
Embodiment, as shown in Figure 1, a kind of device for grinding camshafts, comprise support 30, support 30 is provided with guide rail 29, guide rail 29 is provided with and is used for the carriage 10 of supporting cam wheel axle 11, the two ends of guide rail 29 are respectively arranged with a centre-hole lapping machine structure, the centre-hole lapping machine structure in left side is first grinding mechanism, first grinding mechanism comprises clutch shaft bearing seat 2, hydraulic motor 1 that is in transmission connection and grinding top 9, grind top 9 and be provided with the grinding sword, hydraulic motor 1 and grinding top 9 are arranged on the clutch shaft bearing seat 2, first grinding mechanism is provided with operation handlebar 35, the centre-hole lapping machine structure on right side is second grinding mechanism, and second grinding mechanism comprises second bearing block 13, the hydraulic motor that is in transmission connection 23 and grind toply 12 grinds top 12 and is provided with the grinding sword, hydraulic motor 23 and grinding top 12 are arranged on second bearing block 13, and second bearing block 13 is provided with pressed seat 18 and operating grip 15.
As shown in Figure 2, clutch shaft bearing seat 2 is fixed on the guide rail 29 in support 30 left sides, grinding top 9 is arranged on the milling bar 5, the grinding sword of its end contacts with camshaft 11, milling bar 5 is fixedlyed connected with the turning cylinder of hydraulic motor 1, the turning cylinder of hydraulic motor 1 is provided with spline housing 6, be provided with spline 7 between the turning cylinder of spline housing 6 and hydraulic motor 1, spline housing 6 is provided with two bearings 3, be provided with support set 4 between two bearings 3, milling bar 5 is provided with spline housing 6 is fixed on locking nut 8 on the clutch shaft bearing seat 2, is provided with clamping device 16 between clutch shaft bearing seat 2 and the guide rail 29.
As shown in Figure 3, second bearing block 13 is fixed on the guide rail 29 in support 30 left sides, grinding top 12 is arranged on the milling bar 33, the grinding sword of its end contacts with camshaft 11, milling bar 33 is arranged on the splined shaft 21, splined shaft 21 is fixedlyed connected with the turning cylinder of hydraulic motor 23, the turning cylinder of hydraulic motor 23 is provided with spline housing 22, be provided with spline 31 between the turning cylinder of spline housing 22 and hydraulic motor 23, be provided with spring 20 between spline housing 22 and the splined shaft 21, spline housing 22 is provided with between 24, two bearings 24 of two bearings and is provided with support set 36, pressed seat 18 is provided with rotating shaft 17, operating grip 15 is fixed in the rotating shaft 17, and rotating shaft 17 is provided with shift fork 19, and shift fork 19 is connected with splined shaft 21, second bearing block 13 is provided with between priming cup 14, the second bearing blocks 13 and the guide rail 29 and is provided with clamping device 34.
As shown in Figure 4, clamping device 34 comprises the pull bar 25 that is arranged between second bearing block 13 and the guide rail 29, the bottom of pull bar 25 is provided with the plug screw 27 that compresses guide rail 29 when pull bar 25 rises, the top of pull bar 25 has cavity, accommodate the eccentric shaft 26 vertical in this cavity with pull bar 25, be provided with limited block 28 between the pull bar 25 and second bearing block 13, limited block 28 is threaded with second bearing block 13, and eccentric shaft 26 is provided with operation handlebar 32.
Clamping device 16 between clutch shaft bearing seat 2 and the guide rail 29 and the clamping device 34 between second bearing block 13 and the guide rail 29 have identical structure.
During use, camshaft 11 is placed between first grinding mechanism and second grinding mechanism, make the centre bore at camshaft 11 two ends corresponding with grinding top 9 and grinding top 12, pull operation handlebar 32, eccentric shaft 26 rotates compressing pull bar 25 and moves up, pull bar 25 drives plug screw 27 and moves up, plug screw 27 compresses guide rail 29, second bearing block 13 just is fixed together with guide rail 29, in like manner, pull operation handlebar 35, clutch shaft bearing seat 2 and guide rail 29 are fixed together, pull operating grip 15, shift fork 19 with splined shaft 21 and milling bar 33 adjust to grind top 9 and grinding top 12 contact with the centre bore of camshaft 11, primer fluid pressure motor 1 and hydraulic motor 23, hydraulic motor 1 is opposite with hydraulic motor 23 direction of rotation, grind top 9 and the grinding sword that grinds on top 12 two centre bores of camshaft 11 will be ground, after grinding end, pull operating grip 15 in the other direction, shift fork 19 drives and grinds top moving, make to grind and toply unclamp with camshaft 11 centre bores, pull operation handlebar 32 then in the other direction, eccentric shaft 26 rotates compressing pull bar 25 and moves down, pull bar 25 drives plug screw 27 and moves down, plug screw 27 unclamps with guide rail 29, second bearing block 13 just separates with guide rail 29, second bearing block 13 and clutch shaft bearing seat 2 are moved to the right along guide rail 29, just camshaft 11 can be taken off, next root camshaft is installed is once more processed.