CN115229530A

CN115229530A - Tool for milling key groove

Info

Publication number: CN115229530A
Application number: CN202210928169.8A
Authority: CN
Inventors: 吴涌; 梅崇远; 陈丽华
Original assignee: Chongqing Nachuan Heavy Industry Equipment Manufacturing Co ltd
Current assignee: Chongqing Nachuan Heavy Industry Equipment Manufacturing Co ltd
Priority date: 2022-08-03
Filing date: 2022-08-03
Publication date: 2022-10-25

Abstract

The invention provides a tool for milling a key groove, which relates to the technical field of tool fixtures and comprises a supporting bottom plate, a supporting seat and a clamping assembly, wherein the supporting bottom plate is provided with a plurality of supporting holes; the two supporting seats are respectively arranged at two ends of the supporting bottom plate, and a placing plate is horizontally and fixedly connected to one side, opposite to the two supporting seats, of each supporting seat; the two clamping assemblies are respectively arranged on the two supporting seats and comprise two clamping plates which are respectively arranged above the two ends of the placing plate, the clamping plates are horizontally and slidably connected to the supporting seats, and the sliding directions of the two clamping plates are opposite; the supporting bottom plate is further provided with a pressing assembly for pressing the middle part of the crankshaft, and the pressing assembly is arranged between the two supporting seats. The problem that an output shaft in the prior art is easy to rotate in a key slot milling process to cause low production efficiency is solved.

Description

Tool for milling key groove

Technical Field

The invention relates to the technical field of tool fixtures, in particular to a tool for milling a key slot.

Background

The key slot is a slot matched with a key and processed on a shaft or in a hole, and the slot is used for installing the key so as to transmit torque. The crankshaft is the most important part in the engine, bears the force transmitted by the connecting rod, converts the force into torque, outputs the torque through the crankshaft and drives other accessories on the engine to work, has high clamping requirements on the crankshaft in the key slot milling process of the crankshaft, and when the clamping force of the tool clamp on the crankshaft is not large enough, the crankshaft is easy to rotate in the key slot milling process, so that the processing precision is low due to the rotation of the crankshaft, and the production efficiency is low.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides a tool for milling a key slot, which solves the problem that the output shaft is easy to rotate in the key slot milling process in the prior art, so that the production efficiency is low.

In order to achieve the purpose, the invention adopts the following technical scheme:

a tool for milling a key groove comprises a supporting bottom plate, a supporting seat and a clamping assembly;

the two supporting seats are respectively arranged at two ends of the supporting bottom plate, and a placing plate is horizontally and fixedly connected to one side, opposite to the two supporting seats, of each supporting seat;

the two clamping assemblies are respectively arranged on the two supporting seats and comprise two clamping plates which are respectively arranged above the two ends of the placing plate, the clamping plates are horizontally and slidably connected to the supporting seats, and the sliding directions of the two clamping plates are opposite;

the supporting bottom plate is further provided with a pressing assembly for pressing the middle part of the crankshaft, and the pressing assembly is arranged between the two supporting seats.

Compared with the prior art, the invention has the following beneficial effects:

a placing plate is arranged for placing the crankshaft; the clamping plates of the two clamping assemblies slide to respectively clamp the two ends of the crankshaft; and set up between two centre gripping subassemblies and compressed tightly the subassembly, made the bent axle make at the keyseat more stable, avoided the bent axle to take place to rotate at the in-process of keyseat, improved production efficiency.

Preferably, two one side rigid coupling that splint deviated from has the connecting plate, the level is equipped with the dwang in the supporting seat, the dwang rotates along its self axis to be connected on the supporting seat, and the axis of dwang is parallel with the slip direction of splint, outside the supporting seat was stretched out at the both ends of dwang, two the connecting plate respectively with the both ends threaded connection of dwang, the screw thread at dwang both ends is revolved to on the contrary.

Preferably, be equipped with the cavity in the supporting seat, the dwang middle part is passed the cavity, a driving motor has set firmly on the supporting baseplate, the coaxial rigid coupling of a driving motor's output shaft has a first transfer line, a transfer line one end is passed the cavity rotates to be connected in the supporting seat, a transfer line with the dwang transmission is connected.

Preferably, the pressing assembly comprises a base and a pressing plate, the base is arranged on the supporting bottom plate and located between the two supporting seats, the pressing plate is elastically connected to the upper portion of the base along the vertical direction, and a fixing structure for fixing the pressing plate is further arranged on the base.

Preferably, vertical rigid coupling has the outer pole on the base, and vertical sliding connection has interior pole in the outer pole, the upper end of interior pole with the clamp plate rigid coupling, the cover is equipped with first spring on the interior pole, the both ends of first spring respectively with the upper end of outer pole, the bottom rigid coupling of clamp plate, fixed knot constructs including screw rod and nut, the vertical rigid coupling of screw rod one end is in be equipped with the one end of outer pole on the base, be equipped with the hole that supplies the screw rod to pass on the clamp plate, nut threaded connection is in the upper end of screw rod is used for restricting the clamp plate rebound.

Preferably, the base and one of the supporting seats are slidably connected to the supporting bottom plate along a direction moving towards the other supporting seat.

Preferably, the supporting baseplate is last to be located be equipped with the spout between two supporting seats, base and one of them the equal horizontal sliding connection of supporting seat is in the spout, the bottom of base one side be equipped with can with the fixed plate that the supporting baseplate is fixed, be equipped with the riser on the supporting baseplate, be equipped with the pneumatic cylinder on the riser, the coaxial rigid coupling of output of pneumatic cylinder has the second transfer line, second transfer line and one of them the supporting seat rigid coupling.

Preferably, the spout bottom is equipped with connects the material chamber, connects the material intracavity to be equipped with and connects the workbin, connect material chamber lateral wall to be equipped with the opening, connect workbin one side to be equipped with the fixed block that stretches out outside the opening, be equipped with the locating plate on the supporting baseplate lateral wall, be equipped with the spacing groove on the fixed block, the montant is worn to be equipped with vertically on the locating plate, be equipped with the screw thread through-hole with montant threaded connection on the limiting plate, the montant lower extreme can stretch into the spacing inslot is with the restriction connect the workbin to remove.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.

Drawings

Fig. 1 is a schematic overall structure diagram of an embodiment of the present invention.

Fig. 2 is a schematic view of a supporting seat structure according to an embodiment of the invention.

FIG. 3 is a schematic cross-sectional view of one of the bases according to an embodiment of the invention.

Fig. 4 is a partially sectional schematic view of the overall structure of an embodiment of the present invention.

FIG. 5 is a schematic side view of the connection structure of the material receiving box and the supporting bottom plate according to the embodiment of the present invention.

Fig. 6 is an enlarged schematic view of a portion a of fig. 5.

FIG. 7 is a schematic top view of the structure of the material receiving box according to the embodiment of the invention.

Fig. 8 is a partial cross-sectional view of a connection structure of a clamping assembly and a supporting base plate according to an embodiment of the invention.

Fig. 9 is a schematic view of a supporting seat structure according to another embodiment of the invention.

Fig. 10 is a schematic structural view of a clamping assembly according to another embodiment of the invention.

In the above drawings: 1. a support base plate; 11. a first drive motor; 111. a first drive lever; 12. a receiving cavity; 13. a vertical plate; 14. a pneumatic cylinder; 141. a second transmission rod; 2. a supporting seat; 21. a cavity; 3. placing the plate; 41. a splint; 42. a connecting plate; 43. rotating the rod; 51. a base; 512. a fixing plate; 52. pressing a plate; 531. an outer rod; 532. an inner rod; 54. a first spring; 61. a screw; 62. a nut; 7. a material receiving box; 81. a fixed block; 811. a limiting groove; 82. positioning a plate; 83. a vertical rod.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the invention clearer and easier to understand, the technical scheme of the invention is further described below with reference to the accompanying drawings and the embodiments.

As shown in fig. 1 to 10, an embodiment of the present invention provides a tool for milling a key slot, including a supporting base plate 1, a supporting seat 2, and a clamping assembly; the two supporting seats 2 are respectively arranged at two ends of the supporting bottom plate 1, and the opposite sides of the two supporting seats 2 are horizontally and fixedly connected with a placing plate 3; the two clamping assemblies are respectively arranged on the two supporting seats 2 and comprise two clamping plates 41, the two clamping plates 41 are respectively arranged above the two ends of the placing plate 3, the clamping plates 41 are horizontally and slidably connected to the supporting seats 2, and the sliding directions of the two clamping plates 41 are opposite; the supporting bottom plate 1 is further provided with a pressing assembly for pressing the middle of the crankshaft, and the pressing assembly is arranged between the two supporting seats 2.

Supporting baseplate 1 both sides are equipped with the fixed strip, the accessible sets up fixing bolt's mode on the fixed strip with supporting baseplate 1 fix on the workstation that has the screw hole with fixing bolt threaded connection, when fixing the bent axle, make two of bent axle place respectively on two on supporting seat 2 place board 3, then control two splint 41 press from both sides tightly to the direction of bent axle, press from both sides tightly with the tip of bent axle for make splint 41 better, can set the arc of laminating with bent axle tip surface to one side of splint 41 and bent axle contact, the arc surface sets up the rubber pad, can adapt to the change of bent axle diameter, wrap up it better along with the change of bent axle diameter. A placing plate 3 is arranged for placing the crankshaft; the clamping plates 41 of the two clamping assemblies slide to respectively clamp the two ends of the crankshaft; and set up the compressing tightly subassembly between two centre gripping subassemblies, made the bent axle make more stable at the milling key groove, avoided the bent axle to take place to rotate at the in-process of milling key groove, improved production efficiency.

As shown in fig. 1 to 3, two one side rigid coupling that splint 41 deviates from has connecting plate 42, the level is equipped with dwang 43 in the supporting seat 2, dwang 43 rotates along its self axis and connects on supporting seat 2, and the axis of dwang 43 is parallel with splint 41's slip direction, outside supporting seat 2 was stretched out at the both ends of dwang 43, two connecting plate 42 respectively with the both ends threaded connection of dwang 43, the screw thread at dwang 43 both ends is revolved to opposite. Because splint 41 sliding connection is on supporting seat 2, at dwang 43 pivoted in-process, two connecting plates 42 can drive splint 41 slip, and control dwang 43 rotates for two connecting plates 42 move to opposite direction, so that two connecting plates 42 drive splint 41 and press from both sides tightly or loosen the crankshaft end.

As shown in fig. 3, be equipped with cavity 21 in the supporting seat 2, dwang 43 middle part is passed cavity 21, supporting baseplate 1 is last to have set firmly first driving motor 11, the coaxial rigid coupling of first driving motor 11's output shaft has first transmission pole 111, first transmission pole 111 one end is passed cavity 21 rotates to be connected in the supporting seat 2, first transmission pole 111 with dwang 43 transmission is connected. The first driving lever 111 is driven to rotate by the first driving motor 11, thereby driving the rotating lever 43 to rotate through the driving connection.

As shown in fig. 1 and 8, the pressing assembly includes a base 51 and a pressing plate 52, the base 51 is disposed on the supporting base plate 1 and located between the two supporting seats 2, the pressing plate 52 is elastically connected above the base 51 along a vertical direction, and a fixing structure for fixing the pressing plate 52 is further disposed on the base 51. When the crankshaft is placed, the pressing plate 52 is elastically connected to the base 51, so that the crankshaft can be conveniently placed between the base 51 and the pressing plate 52; a fixing structure is provided so that the distance between the pressing plate 52 and the base 51 can be controlled to press the crankshaft.

Further, the concrete structure of the pressing assembly is as shown in fig. 8, an outer rod 531 is vertically fixedly connected to the base 51, an inner rod 532 is vertically and slidably connected to the inner end of the outer rod 531, the upper end of the inner rod 532 is fixedly connected to the pressing plate 52, a first spring 54 is sleeved on the inner rod 532, two ends of the first spring 54 are fixedly connected to the upper end of the outer rod 531 and the bottom end of the pressing plate 52 respectively, the fixing structure comprises a screw 61 and a nut 62, the vertical fixedly connected to one end of the screw 61 is arranged at one end of the outer rod 531 on the base 51, a hole for the screw 61 to pass through is formed in the pressing plate 52, and the nut 62 is in threaded connection with the upper end of the screw 61 and used for limiting the pressing plate 52 to move upwards. The distance between the pressing plate 52 and the base 51 is adjusted by the nut 62 and the screw 61. In the case where the screw 61 is not provided, the inner rod 532 is moved upward by the elastic force of the first spring 54, and the inner rod 532 lifts the pressing plate 52 upward so that the pressing plate 52 is spaced from the base 51 by a distance sufficient to facilitate the crankshaft to be inserted from the side; after the crankshaft is inserted, the rotating nut 62 moves downward on the screw 61, pushing the pressing plate 52 to move downward, thereby pressing the middle portion of the crankshaft.

The base 51 and one of the supporting seats 2 are slidably connected to the supporting base plate 1 along a direction moving towards the other supporting seat 2. The distance between the supporting seats 2 and the position of the base 51 are adjusted to adapt to the pressing and key milling of crankshafts with different lengths.

Specifically, as shown in fig. 1, fig. 4 and fig. 8, the supporting baseplate 1 is last to be located be equipped with the spout between two supporting seats 2, base 51 and one of them the equal horizontal sliding connection of supporting seat 2 is in the spout, base 51 bottom rigid coupling has the base slider, base slider sliding connection in the spout, the bottom of base 51 one side be equipped with can with the fixed plate 512 that supporting baseplate 1 is fixed, be equipped with riser 13 on the supporting baseplate 1, be equipped with pneumatic cylinder 14 on the riser 13, the coaxial rigid coupling of output of pneumatic cylinder 14 has second transfer line 141, second transfer line 141 and one of them supporting seat 2 rigid coupling. As shown in fig. 8, a supporting fixing plate is provided at one side of the supporting base plate 1, and the fixing plate 512 and the supporting fixing plate are connected by bolts. As shown in fig. 1 and 4, a sliding plate is fixedly connected to the bottom of one of the supporting seats 2, a supporting slide block is fixedly connected to the bottom of the sliding plate, the supporting slide block is slidably connected in the sliding groove, the slide block supporting seat 2 and the first driving motor 11 are both arranged on the sliding plate, and one of the supporting seats 2 is pushed by the pneumatic cylinder 14, so that the supporting slide block drives the sliding plate to move, and the length of the crankshaft which can be supported and fixed is changed.

As shown in fig. 4 to 8, the spout bottom is equipped with connects material chamber 12, connects to be equipped with in the material chamber 12 and connects material case 7, connect material chamber 12 lateral wall to be equipped with the opening, connect material case 7 one side to be equipped with the fixed block 81 that stretches out the opening outside, be equipped with locating plate 82 on the supporting baseplate 1 lateral wall, be equipped with spacing groove 811 on the fixed block 81, vertical montant 83 of wearing to be equipped with on the locating plate 82, be equipped with the threaded through-hole with montant 83 threaded connection on the locating plate 82, montant 83 lower extreme can stretch into in the spacing groove 811 with the restriction connect material case 7 to remove. The material receiving box 7 is arranged and used for receiving chips falling into the sliding chute after key milling, the chips cannot be accumulated at the bottom of the sliding chute, and influence on sliding of the base 51 and the supporting seat 2 is avoided; connect the both ends of workbin 7 one side all to be equipped with fixed block 81, connect workbin 7 to stretch into through montant 83 with connect the spacing groove 811 of the fixed block 81 that workbin 7 is connected to the fixed workbin 7 that connects, during the fixed workbin 7 that connects, rotate montant 83 for montant 83 moves down, supports the spacing groove 811 bottom until montant 83 lower extreme, has avoided receiving workbin 7 from connecing the roll-off in the material chamber 12.

Further, as shown in fig. 9 and 10, in order to prevent the crankshaft from falling after the crankshaft is placed, the placing plate 3 and the pedestal 51 are each provided with a slope inclined toward the middle.

Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.

Claims

1. The utility model provides a frock for milling keyway which characterized in that: comprises a supporting bottom plate (1), a supporting seat (2) and a clamping assembly;

the two supporting seats (2) are respectively arranged at two ends of the supporting bottom plate (1), and a placing plate (3) is horizontally and fixedly connected to one side, opposite to the two supporting seats (2);

the two clamping assemblies are respectively arranged on the two supporting seats (2), each clamping assembly comprises two clamping plates (41), the two clamping plates (41) are respectively arranged above the two ends of the placing plate (3), the clamping plates (41) are horizontally and slidably connected to the supporting seats (2), and the sliding directions of the two clamping plates (41) are opposite;

the supporting bottom plate (1) is further provided with a pressing assembly for pressing the middle part of the crankshaft, and the pressing assembly is arranged between the two supporting seats (2).

2. The tooling for milling the key slot according to claim 1, wherein: two one side rigid coupling that splint (41) deviate from has connecting plate (42), the level is equipped with dwang (43) in supporting seat (2), dwang (43) are rotated along its self axis and are connected on supporting seat (2), and the axis of dwang (43) is parallel with the slip direction of splint (41), outside supporting seat (2) was stretched out at the both ends of dwang (43), two connecting plate (42) respectively with the both ends threaded connection of dwang (43), the screw thread at dwang (43) both ends is revolved to opposite.

3. The tooling for milling the key slot according to claim 2, wherein: be equipped with cavity (21) in supporting seat (2), dwang (43) middle part is passed cavity (21), set firmly first driving motor (11) on supporting baseplate (1), the coaxial rigid coupling of output shaft of first driving motor (11) has first transmission pole (111), first transmission pole (111) one end is passed cavity (21) rotates to be connected in supporting seat (2), first transmission pole (111) with dwang (43) transmission is connected.

4. The tooling for milling the key groove of claim 1, wherein: the pressing assembly comprises a base (51) and a pressing plate (52), the base (51) is arranged on the supporting base plate (1) and located between the two supporting seats (2), the pressing plate (52) is elastically connected to the upper portion of the base (51) in the vertical direction, and a fixing structure for fixing the pressing plate (52) is further arranged on the base (51).

5. The tooling for milling the key slot according to claim 1, wherein: vertical rigid coupling has outer pole (531) on base (51), and vertical sliding connection has interior pole (532) in outer pole (531), the upper end of interior pole (532) with clamp plate (52) rigid coupling, the cover is equipped with first spring (54) on interior pole (532), the both ends of first spring (54) respectively with the upper end of outer pole (531), the bottom rigid coupling of clamp plate (52), fixed knot constructs including screw rod (61) and nut (62), the vertical rigid coupling of screw rod (61) one end is in be equipped with the one end of outer pole (531) on base (51), be equipped with the hole that supplies screw rod (61) to pass on clamp plate (52), nut (62) threaded connection is in the upper end of screw rod (61) is used for restricting clamp plate (52) rebound.

6. The tooling for milling the key slot according to claim 1, wherein: the base (51) and one of the supporting seats (2) are connected to the supporting bottom plate (1) in a sliding mode along the direction moving towards the other supporting seat (2).

7. The tooling for milling the key groove of claim 6, wherein: the supporting base plate (1) is provided with a sliding groove between the two supporting seats (2), the base (51) and one of the supporting seats are horizontally slidably connected in the sliding groove, the bottom of one side of the base (51) is provided with a fixing plate (512) capable of being fixed with the supporting base plate (1), the supporting base plate (1) is provided with a vertical plate (13), the vertical plate (13) is provided with a pneumatic cylinder (14), the output end of the pneumatic cylinder (14) is fixedly connected with a second transmission rod (141), and the second transmission rod (141) is fixedly connected with the supporting seat (2).

8. The tooling for milling the key groove according to claim 7, wherein: the utility model discloses a material storage device, including spout bottom, connecting bottom plate (1), locating plate (82), locating plate (811), locating groove (811), locating plate (82), montant (83) are worn to be equipped with vertically on locating plate (82), be equipped with on locating plate (82), montant (83) threaded connection's threaded through-hole is equipped with on locating plate (82), montant (83) lower extreme protractile in spacing groove (811) with the restriction connect workbin (7) to remove, connect workbin (12) to be equipped with and connect workbin (12), be equipped with in workbin (12) one side and stretch out fixed block (81) outside the opening.