CN220039727U

CN220039727U - Auxiliary device of crankshaft dynamic balance weight removing machine

Info

Publication number: CN220039727U
Application number: CN202321728072.9U
Authority: CN
Inventors: 秦红波
Original assignee: Shanghai Jianping Dynamic Balancing Machine Manufacturing Co ltd
Current assignee: Shanghai Jianping Dynamic Balancing Machine Manufacturing Co ltd
Priority date: 2023-07-03
Filing date: 2023-07-03
Publication date: 2023-11-17
Anticipated expiration: 2033-07-03

Abstract

The utility model relates to the technical field of dynamic balance testing, and particularly discloses an auxiliary device of a crankshaft dynamic balance weight removing machine, which comprises a machine body, an air chuck rotationally fixed on the machine body and a driving piece for driving the air chuck to rotate. According to the utility model, the transmission shaft is fixed on the air chuck, the brake disc is fixed on the transmission shaft, and when punching and weight removal are needed, the brake disc is clamped and fixed through the calipers, so that the air chuck and the crankshaft are fixed, the crankshaft can be effectively prevented from deflecting in the punching process, and the processing precision of the crankshaft is effectively improved.

Description

Auxiliary device of crankshaft dynamic balance weight removing machine

Technical Field

The utility model relates to the technical field of dynamic balance test, in particular to an auxiliary device of a crankshaft dynamic balance weight removing machine.

Background

The crankshaft is the most important component in an engine. The engine is used for bearing the force transmitted by the connecting rod, converting the force into torque, outputting the torque through the crankshaft and driving other accessories on the engine to work. The crankshaft is subjected to the combined action of centrifugal force of the rotating mass, periodically-changed gas inertia force and reciprocating inertia force, so that the crankshaft is subjected to bending torsion load. Therefore, the crankshaft is required to have enough strength and rigidity, and the journal surface needs to be wear-resistant, uniform in work and good in balance.

In the related art, after the crankshaft is produced, a dynamic balance test is required. The crankshaft is fixed on a dynamic balancing machine, the crankshaft is driven to rotate by the dynamic balancing machine, then the crankshaft is tested, the point of the eccentric weight of the crankshaft is found, and then the crankshaft is drilled for removing the weight.

During the drilling process, the crankshaft is required to be fixed stably, and the crankshaft cannot deflect during the drilling process, which can lead to breakage and inaccurate weight removal of the drill bit. To this end, the inventors provide a crankshaft dynamic balance weight-removing machine auxiliary device.

Disclosure of Invention

In order to facilitate punching and de-weighting of a crankshaft, the utility model provides an auxiliary device of a dynamic balance de-weighting machine for the crankshaft, which can effectively improve the machining precision of the crankshaft.

The utility model provides an auxiliary device of a dynamic balance weight removing machine for a crankshaft, which adopts the following technical scheme:

the utility model provides a bent axle dynamic balance removes heavy machine auxiliary device, includes the organism, rotates to be fixed in air chuck on the organism and be used for the drive air chuck pivoted driving piece, air chuck be provided with two and respectively coaxial arrangement in the both ends of organism, one of them air chuck keeps away from another air chuck's one end coaxial fixation has the transmission shaft, coaxial fixation has the brake disc on the transmission shaft, be fixed with on the organism and be used for the centre gripping to fix the calliper of brake disc.

By adopting the technical scheme, the air chucks are arranged at the two ends of the machine body, and when the crankshaft is perforated and the weight is removed, the two ends of the crankshaft are clamped and fixed by the clamping jaws of the air chucks; then through driving piece drive air chuck and bent axle rotation, when rotating the position that needs the de-weight, the driving piece stops rotating, and calliper presss from both sides tight brake disc simultaneously and further fixes the bent axle position, then to the bent axle de-weight that punches, can effectively prevent that the in-process bent axle of punching from taking place to rotate, and then effectively improve the machining precision of bent axle.

Optionally, the caliper is provided with two groups, and is respectively and symmetrically arranged at two sides of the brake disc.

Through adopting above-mentioned technical scheme, set up two sets of callipers, can effectively improve the clamping force to the brake disc, further prevent that the bent axle from taking place to deflect.

Optionally, a sliding table is respectively arranged at the position corresponding to the two air chucks on the machine body, the two air chucks are respectively arranged on the two sliding tables, the sliding tables slide along the axis direction of the air chucks and are arranged on the machine body, the driving piece is set as a servo motor, the driving piece is fixed on the lower side of the sliding tables, the transmission shaft is arranged on the upper side of the sliding tables, and the transmission shaft and the driving piece are transmitted through a synchronous pulley and a synchronous belt.

By adopting the technical scheme, two sliding tables are arranged on the machine body, the air chuck is arranged on the sliding tables, and when the air chuck is used, the sliding tables can be moved to proper positions according to the length of the crankshaft, so that the two ends of the crankshaft can be clamped and fixed conveniently; the driving piece and the transmission shaft are driven by the synchronous belt and the synchronous belt wheel, so that the transmission precision of the driving piece to the transmission shaft can be effectively improved, and the transmission angle deviation between the transmission shaft and the driving piece can be effectively reduced.

Optionally, two guide shafts are fixed on the machine body along the sliding direction of the sliding table, the guide shafts are respectively positioned at two sides of the machine body, a sliding block is fixed on the sliding table at a position corresponding to the guide shafts, and the guide shafts penetrate through the sliding block and are in sliding fit with the sliding block; the machine body is provided with a sliding table, two guide shafts are arranged on the sliding table, the guide shafts are parallel to the sliding table, and the guide shafts are fixedly arranged on the sliding table at positions corresponding to the guide shafts; and an adjusting hand wheel is fixed at the end part of the adjusting screw rod.

By adopting the technical scheme, the machine body is provided with the guide shaft, and the sliding table can be guided through sliding fit of the guide shaft and the sliding block, so that the sliding precision of the sliding table is improved; through setting up lead screw and regulating block, when using, can adjust the position of slip table through rotating adjusting handle, convenient operation.

Optionally, still include the supporting seat that is used for supporting bent axle main journal, the supporting seat is provided with two and is located two respectively air chuck department, set up the supporting slot on the supporting seat, the supporting slot with air chuck is coaxial, the supporting slot internal fixation has the axle bush.

By adopting the technical scheme, the supporting seat is arranged, the crankshaft is supported by the supporting seat, and then the crankshaft is clamped and fixed by the air chuck, so that the coaxiality of the crankshaft and the air chuck can be effectively improved, and the machining precision of the crankshaft is further improved; the bearing bush is fixed in the supporting groove, so that friction to a main journal of the crankshaft can be reduced, and the crankshaft is prevented from being damaged.

Optionally, an oil groove and an oil hole communicated with the oil groove are formed in the bearing bush.

By adopting the technical scheme, in the processing process, lubricating oil can be injected into the grooved through the oil hole to lubricate between the bearing bush and the main journal of the crankshaft.

Optionally, an adjusting seat is fixed at a position on the supporting seat corresponding to the guide shaft, and the adjusting seat is fastened on the guide shaft.

By adopting the technical scheme, when in use, the position of the supporting seat can be adjusted according to the length of the crankshaft, so that the main journal of the crankshaft can be erected on the supporting seat.

Optionally, a blowing head for blowing air to the supporting groove is fixed on the machine body.

Through adopting above-mentioned technical scheme, set up the gas blowing head on the organism, after finishing processing a bent axle, before installing next bent axle, through the gas blowing head to the axle bush department of supporting seat clean of blowing, prevent that axle bush department from dropping the metal chip and influencing the processing of next bent axle.

In summary, the present utility model includes at least one of the following beneficial technical effects:

1. through setting up air chucks at the both ends of organism, when punching the duplicate removal to the bent axle, the clamping jaw centre gripping of passing through air chucks is fixed with the both ends of bent axle, then drive air chucks and bent axle through the driving piece and rotate, when rotating the position that needs duplicate removal, the driving piece stops rotating, calliper clamp brake disc is further fixed to the bent axle position simultaneously, then punches the duplicate removal to the bent axle, can effectively prevent that the bent axle from taking place to rotate in the punching process, and then effectively improve the machining precision of bent axle;

2. the two sliding tables are arranged on the machine body, the air chuck is arranged on the sliding tables, when the air chuck is used, the sliding tables can be moved to a proper position according to the length of the crankshaft, the two ends of the crankshaft are conveniently clamped and fixed, the driving piece and the driving shaft are driven by the synchronous belt and the synchronous belt wheel, the transmission precision of the driving piece to the driving shaft can be effectively improved, and the transmission angle deviation between the driving shaft and the driving piece is effectively reduced;

3. through setting up the blowhead on the organism, after finishing processing a bent axle, before installing next bent axle, through the clean of blowing of blowhead to the axle bush department of supporting seat, prevent that axle bush department from dropping the metal chip and influencing the processing of next bent axle.

Drawings

FIG. 1 is a schematic overall structure of an embodiment of the present utility model;

FIG. 2 is a schematic view showing the structure of a brake disc;

FIG. 3 is an enlarged view of area A of FIG. 2;

fig. 4 is a schematic view showing the structure of the synchronous belt.

Reference numerals: 1. a body; 11. a guide shaft; 12. a blow head; 2. an air chuck; 21. a transmission shaft; 22. a brake disc; 23. a caliper; 3. a driving member; 31. a synchronous pulley; 32. a synchronous belt; 4. a support base; 41. an adjusting seat; 42. a support groove; 43. bearing bush; 431. an oil groove; 432. an oil hole; 5. a sliding table; 51. a slide block; 52. adjusting a screw rod; 53. an adjusting block; 54. and an adjusting hand wheel.

Detailed Description

The utility model is described in further detail below with reference to fig. 1-4.

The embodiment of the utility model discloses an auxiliary device of a crankshaft dynamic balance weight removing machine, which comprises a machine body 1, an air chuck 2 rotatably arranged on the machine body 1 and a driving piece 3 for driving the air chuck 2 to rotate, and is disclosed with reference to fig. 1 and 2. Two ends of the machine body 1 are respectively provided with a sliding table 5 in a sliding way, and the sliding tables 5 are close to or far away from each other along the length direction of the machine body 1; the two air chucks 2 are arranged, the two air chucks 2 are respectively and rotatably arranged on the two sliding tables 5, the two air chucks 2 are positioned on the same axis, the air chucks 2 are positioned on one sides of the two sliding tables 5, which are close to each other, and the clamping jaws of the two air chucks 2 are positioned on one sides of the two air chucks 2, which are close to each other. During production, two ends of a crankshaft are clamped and fixed through clamping jaws of the air chuck 2, then the crankshaft is driven to rotate through the driving piece 3, the crankshaft stops when rotating to a point where the crankshaft needs to be subjected to weight removal, and then punching and weight removal are performed on the position where the crankshaft needs to be subjected to weight removal.

A transmission shaft 21 is coaxially fixed at one end of one air chuck 2 far away from the other air chuck 2, a brake disc 22 is coaxially fixed on the transmission shaft 21, a caliper 23 for clamping the brake disc 22 is fixed on the sliding table 5, and two groups of calipers 23 are arranged and are respectively positioned at two sides of the brake disc 22. During the machining process, when the crankshaft is required to be drilled, the brake disc 22 is clamped and fixed through the calipers 23, and deflection of the crankshaft during the drilling process is prevented, so that the machining precision is improved.

Referring to fig. 2 and 3, two guide shafts 11 are fixed to the machine body 1 along the moving direction of the slide table 5, the guide shafts 11 are fixed to both sides of the machine body 1, respectively, and the slide table 5 is slidably mounted on the guide shafts 11. A supporting seat 4 is arranged between the two sliding tables 5 on the guide shaft 11, and the supporting seat 4 is a vertical plate body; an adjusting seat 41 is fixed at the lower end of the supporting seat 4 corresponding to the two guide shafts 11, the adjusting seat 41 is cut into two halves from the middle for convenient installation, and the adjusting seat 41 is clamped and fixed on the guide shafts 11 from the upper side and the lower side of the guide shafts 11. A supporting groove 42 is formed at the upper end of the adjusting seat 41, and the supporting groove 42 is a semicircular groove coaxial with the air chuck 2; a bush 43 slidably fitted to the main journal of the crankshaft is fitted into the support groove 42. When in use, the length of the crankshaft is further used for adjusting the position of the supporting seat 4 on the guide shaft 11, so that the main journal of the crankshaft can be arranged in the bearing bush 43, and then the two ends of the crankshaft are clamped and fixed through the air chuck 2.

An oil groove 431 and an oil hole 432 communicating with the oil groove 431 are formed in the inner wall of the bearing bush 43, and during machining, lubricating oil is injected into the oil groove 431 from the oil hole 432, so that the bearing bush 43 and the main journal of the crankshaft are lubricated, and mutual friction and abrasion are reduced.

Referring to fig. 1 and 3, a blowing head 12 is installed on the machine body 1 at a position corresponding to the supporting seat 4, after a crankshaft is machined, before a next crankshaft is installed, the blowing head 12 blows air to the position of the bearing bush 43, so that metal scraps falling on the bearing bush 43 are blown off, and damage to the next crankshaft caused by the metal scraps in the bearing bush 43 is prevented.

Referring to fig. 1 and 4, a slider 51 is fixed to the bottom of the slide table 5 at a position corresponding to the two guide shafts 11, and the guide shafts 11 penetrate the slider 51 and slidably fit with the slider 51. Two ends of the machine body 1 are respectively and rotatably fixed with an adjusting screw rod 52 corresponding to the two sliding tables 5, an adjusting block 53 is fixed on the lower side of the sliding tables 5, and the adjusting screw rods 52 penetrate through the adjusting block 53 and are in threaded fit with the adjusting block 53. An adjusting hand wheel 54 is fixed at the end part of the adjusting screw rod 52, and the sliding table 5 can be driven to slide on the guide shaft 11 by rotating the adjusting hand wheel 54, so that the adjustable screw rod is applicable to crankshafts with different lengths.

The driving piece 3 is set to a servo motor, the driving piece 3 is installed at the lower side of the sliding table 5, a synchronous pulley 31 is fixed on a rotating shaft of the driving piece 3, the synchronous pulley 31 is coaxially fixed at one end of the transmission shaft 21 far away from the air chuck 2, and a synchronous belt 32 is sleeved on the two synchronous pulleys 31. When the driving member 3 rotates, the driving shaft 21 is driven to rotate. The synchronous belt 32 is driven, so that the angle deviation between the driving piece 3 and the transmission shaft 21 can be effectively reduced, and the control precision of the crankshaft is improved.

The embodiment of the utility model discloses an auxiliary device for a dynamic balance weight removing machine of a crankshaft, which comprises the following implementation principles: the transmission shaft 21 is coaxially fixed on the air chuck 2, and the brake disc 22 is arranged on the transmission shaft 21, so that the air chuck 2 is driven to rotate by the driving piece 3 to drive the crankshaft to rotate during normal operation; when the rotary drill bit rotates to the point position requiring punching, the driving piece 3 stops rotating and clamps and fixes the brake disc 22 through the calipers 23, so that deflection of the crankshaft in the punching process can be effectively prevented, and further the machining precision of the crankshaft is effectively improved.

The above embodiments are not intended to limit the scope of the present utility model, so: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.

Claims

1. The utility model provides a bent axle dynamic balance removes heavy machine auxiliary device which characterized in that: including organism (1), rotate be fixed in air chuck (2) and be used for the drive on organism (1) air chuck (2) pivoted driving piece (3), air chuck (2) be provided with two and respectively coaxial install in the both ends of organism (1), one of them air chuck (2) keep away from another air chuck (2) one end coaxial fixation has transmission shaft (21), coaxial fixation has brake disc (22) on transmission shaft (21), be fixed with on organism (1) and be used for the centre gripping to fix calliper (23) of brake disc (22).

2. The crankshaft dynamic balance weight removing machine auxiliary device according to claim 1, wherein: the calipers (23) are provided with two groups, and are symmetrically arranged on two sides of the brake disc (22) respectively.

3. The crankshaft dynamic balance weight removing machine auxiliary device according to claim 1, wherein: the pneumatic clamping device is characterized in that a sliding table (5) is arranged at the position, corresponding to the two pneumatic clamping discs (2), on the machine body (1), the two pneumatic clamping discs (2) are arranged on the two sliding tables (5) respectively, the sliding tables (5) are arranged on the machine body (1) in a sliding mode along the axial direction of the pneumatic clamping discs (2), a driving piece (3) is arranged as a servo motor, the driving piece (3) is fixed on the lower side of the sliding tables (5), a transmission shaft (21) is arranged on the upper side of the sliding tables (5), and the transmission shaft (21) and the driving piece (3) are in transmission through a synchronous pulley (31) and a synchronous belt (32).

4. A crankshaft dynamic balance weight removing machine auxiliary device according to claim 3, wherein: two guide shafts (11) are fixed on the machine body (1) along the sliding direction of the sliding table (5), the guide shafts (11) are respectively positioned on two sides of the machine body (1), a sliding block (51) is fixed on the sliding table (5) at the position corresponding to the guide shafts (11), and the guide shafts (11) penetrate through the sliding block (51) and are in sliding fit with the sliding block (51); the automatic feeding device is characterized by further comprising two adjusting screw rods (52) which are rotationally fixed on the machine body (1), wherein the two adjusting screw rods (52) are arranged corresponding to the sliding table (5), the adjusting screw rods (52) are parallel to the guide shafts (11), adjusting blocks (53) are fixed on the sliding table (5) corresponding to the adjusting screw rods (52), and the adjusting screw rods (52) penetrate through the adjusting blocks (53) and are in threaded fit with the adjusting blocks (53); an adjusting hand wheel (54) is fixed at the end part of the adjusting screw rod (52).

5. The auxiliary device for the dynamic balance weight removing machine for the crankshaft according to claim 4, wherein: the novel pneumatic chuck is characterized by further comprising support bases (4) used for supporting main journals of crankshafts, wherein the two support bases (4) are arranged and are respectively located at the two pneumatic chucks (2), support grooves (42) are formed in the support bases (4), the support grooves (42) are coaxial with the pneumatic chucks (2), and bearing bushes (43) are fixed in the support grooves (42).

6. The crankshaft dynamic balance weight removing machine auxiliary device according to claim 5, wherein: an oil groove (431) and an oil hole (432) communicated with the oil groove (431) are formed in the bearing bush (43).

7. The crankshaft dynamic balance weight removing machine auxiliary device according to claim 5, wherein: an adjusting seat (41) is fixed on the supporting seat (4) at a position corresponding to the guide shaft (11), and the adjusting seat (41) is fastened and fixed on the guide shaft (11).

8. The crankshaft dynamic balance weight removing machine auxiliary device according to claim 5, wherein: the machine body (1) is fixedly provided with a blowing head (12) for blowing to the supporting groove (42).