CN205834896U - A kind of novel gear bits module of working shaft-like part chuck - Google Patents

Abstract

The utility model discloses a novel swarf-retaining module for machining shaft parts chucks. A plurality of claws are arranged on the circumferential end surface of the chuck, and the claws are used to clamp shaft parts after stretching out. The chip retaining module includes a plurality of chip retaining module bodies, and the plurality of chip retaining module bodies are all fixed on the chuck and correspond to the positions of the claws one by one; wherein, the claws are also provided with There is a clamping surface, the chip retaining module body is provided with a chip retaining surface, and the claw also has an extended position and an initial position, when the claw is in the extended position, the clip on the claw The tightening surface is in contact with the flange peripheral surface of the shaft part, and when the claw is in the initial position, the clamping surface on the claw matches the chip blocking surface on the chip blocking module body. The utility model fundamentally avoids the generation of claw marks on the outer circle of the flange of the shaft parts, and has a simple structure and convenient installation without causing damage to the original structure of the chuck.

Description

A new type of chip retaining module for processing shaft parts chuck

technical field

The utility model relates to the technical field of high-efficiency machining of engine shaft parts, in particular to a novel chip retaining module for machining shaft parts chucks.

Background technique

Refer to Fig. 1. In order to achieve high-efficiency machining in the pulling process of the crankshaft main journal 1' (including the flange end) of the German Volkswagen EA888 engine series, it is necessary to complete the rough machining of all the five-speed main journal 1' and the flange end on one equipment. process. During the processing, the flange end of the turned crankshaft (including the flange outer circle 2' and the end face) of the first gear main journal blank surface is first clamped by the jaws at the tail end, and then the clamping process is completed by the jaws 3' at the headstock end. The outer circle of the flange is 2', and the fifth gear main journal is pulled by using the blade 4'. Chips produced by turning the flange end will splash on the clamping surface of the jaw 3' at the headstock end. When the jaw 3' clamps the flange outer circle 2', it is clamped between the jaw 3' and the flange outer circle 2 'The metal swarf between the flanges produces 0.5-1.5mm deep indentations on the outer circle of the flange 2', and the margin in the subsequent fine grinding process is about 0.3, which cannot remove the indentations. The incidence rate is about 0.2%.

The outer circle of the crankshaft flange is the key sealing surface of the engine. According to the German Volkswagen PV6261 standard, no defects are allowed on the sealing surface of the parts. There are mainly three existing technological solutions to solve the defects of claw marks on the outer circle of the crankshaft flange:

①. Divide the processing of the outer end of the flange and the processing of the fifth-gear main journal into two successive processes. First process the flange end (including the flange outer circle 2' and the end face) on one device, and then process the five-speed main journal on another device. For example, the German Volkswagen EA113 crankshaft adopts such a processing technology; the disadvantage is: the method of increasing the processing process needs to invest in new equipment, and the processing cost is high;

②. Optimize the tool and cutting parameters, improve the chip shape and size, and make it easy to remove chips; the disadvantage is that it is difficult to optimize the tool, and it cannot fundamentally solve the occurrence of claw marks on the outer circle of the flange. At the same time, it affects the service life of the tool and increases Processing costs;

③. Use compressed air to blow chips or use cooling medium to blow chips, such as nozzle blowing chips. The disadvantages are: compressed air chip blowing and cooling medium chip blowing, there are disadvantages such as easy loss of nozzle chip blowing position, high noise, and the need for regular adjustments.

Utility model content

The main purpose of the utility model is to provide a new type of chip retaining module for processing shaft parts chucks, which avoids the generation of claw marks on the outer circle of the flange, and has a simple structure and is easy to install without affecting the original structure of the chuck. cause damage.

In order to achieve the above purpose, the utility model provides a new type chip retaining module for machining shaft parts chuck. The circumferential end surface of the chuck is provided with a plurality of claws, and the claws are used to clamp the shaft after extending out. For parts, the chip retaining module includes a plurality of chip retaining module bodies, and a plurality of the chip retaining module bodies are fixed on the chuck and correspond to the positions of the jaws one by one; wherein, the chuck The claw is also provided with a clamping surface, and the chip retaining module body is provided with a chip retaining surface, and the claw also has an extended position and an initial position. When the claw is in the extended position, the The clamping surface on the claw is in contact with the flange circumferential surface of the shaft part. When the claw is in the initial position, the clamping surface on the claw is in contact with the chip blocking surface on the chip blocking module body. Cooperate.

According to a preferred embodiment of the present utility model: a groove is provided on the inner side of the chip retaining module body, and the shape of the groove is adapted to the shape of the claw, wherein the chip retaining surface is set on the the bottom of the groove.

According to a preferred embodiment of the present invention: the shape of the chip retaining module body is fan-shaped, and a notch is provided at the center of the fan-shape, and the shape of the notch corresponds to the shape of the top end of the chuck.

According to a preferred embodiment of the present invention: the two ends of the chip retaining module body are also provided with two connecting bosses, and a through hole is opened on the connecting boss, and the chip retaining module body passes through the After the above through hole is fixedly connected with the end face of the chuck.

According to a preferred embodiment of the present invention: the outer surface of the chip retaining module body is in close contact with the end surface of the chuck.

According to a preferred embodiment of the present utility model: the shape of the clamping surface is an inwardly recessed zigzag groove, the shape of the chip retaining surface is an outwardly protruding zigzag bump, and the bump and the Compatible with the above groove.

According to a preferred embodiment of the present utility model: a plurality of the chip retaining module bodies are evenly distributed along the circumferential end surface of the chuck.

The beneficial effect of the utility model is that: by installing the chip retaining module body on the existing chuck, the chip retaining surface of the chip retaining module body is matched with the clamping surface of the claw, and when turning the outer circle of the flange of the shaft part When the chip-stopping module body can protect the clamping surface of the jaws from being polluted by chips, when the claws are extended or retracted, the chip-stopping surface of the chip-stopping module body can remove the chips that may remain on the clamping surface, so as to remove the chips from the source On the other hand, it avoids the claw marks on the outer circle of the flange of the shaft parts, and its structure is simple, easy to install, and will not cause damage to the original structure of the chuck.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are only some embodiments of the utility model, and those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is a structural schematic diagram of a chuck for processing shaft parts in the prior art;

Fig. 2 is a schematic diagram of a state in which the claws of the novel chip retaining module of the chuck for processing shaft parts of the present invention are in the extended position;

Fig. 3 is a schematic diagram of the status of the jaws of the novel chip retaining module of the chuck for processing shaft parts of the present invention in the initial position;

Fig. 4 is a partially enlarged view of Fig. 3;

Fig. 5 is a structural schematic diagram of the chip retaining module body of the novel chip retaining module of the chuck for machining shaft parts of the present invention.

detailed description

The preferred embodiments of the utility model will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the utility model can be more easily understood by those skilled in the art, so as to make a clearer definition of the protection scope of the utility model.

Referring to Fig. 2-4, the utility model is a novel chip retaining module for processing shaft parts chucks. The circumferential end surface of the chuck 1 is provided with a plurality of claws 2, and the claws 2 are used to clamp the shaft after extending out. Part 3, the chip retaining module includes a plurality of chip retaining module bodies 4, and the plurality of chip retaining module bodies 4 are fixed on the chuck 1 and correspond to the positions of the jaws 2 one by one; wherein, the jaws 2 are also provided with There is a clamping surface 21, the chip retaining module body 4 is provided with a chip retaining surface 41, and the jaw 2 also has an extended position and an initial position, when the jaw 2 is in the extended position, the clamping surface on the jaw 2 21 is in contact with the flange peripheral surface of the shaft part 3. When the jaw 2 is in the initial position, the clamping surface 21 on the jaw 2 matches the chip retaining surface 41 on the chip retaining module body 4. Wherein, in order to enable the chip retaining module body 4 to carry out uniform chip retaining, a plurality of chip retaining module bodies 4 are evenly distributed along the circumferential end surface of the chuck 1 .

The utility model installs the chip retaining module body 4 on the existing chuck 1, so that the chip retaining surface 41 of the chip retaining module body 4 matches the clamping surface 21 of the claw 2, when turning shaft parts 3 When the outer circle is round, the chip retaining module body 4 can protect the clamping surface 21 of the jaw 2 from being polluted by chips. When the jaw 2 is extended or retracted, the chip retaining surface 41 of the chip retaining module body 4 can clear the clamping surface 21, thereby avoiding the generation of claw marks on the outer circle of the flange of the shaft part 3 from the root, and its structure is simple, easy to install, and will not cause damage to the original structure of the chuck 1.

As shown in FIG. 5 , a groove 42 is provided inside the chip-retaining module body 4 . The shape of the groove 42 matches the shape of the jaw 2 . In this embodiment, the groove 42 matches the shape of the side wall of the claw 2. When the outer circle of the flange of the shaft part 3 is turned, the groove 42 can also protect the side wall of the claw 2 to prevent chips from passing through. The side wall of the claw 2 slides onto the clamping surface 21, which further increases the protection area of the chip retaining module body 4 and improves the effect of chip prevention.

Preferably, the shape of the chip blocking module body 4 is fan-shaped, and a notch 43 is provided at the center of the fan-shaped circle, and the shape of the notch 43 corresponds to the shape of the root of the tip 11 of the chuck 1 . In this way, the interference between the chip-stopping module body 4 and the tip 11 is avoided, and damage to the original structure of the chuck 1 is also avoided.

Specifically, two connecting bosses 44 are provided at both ends of the chip retaining module body 4, and a through hole 45 is provided on the connecting boss 44. The end faces are fixedly connected. The utility model utilizes the original structure of the chuck 1 and adopts a bolt connection mode, so that the chip retaining module body 4 can be easily installed, disassembled, Repair and Replacement.

In the utility model, in order to prevent the chip retaining module body 4 from interfering with the cutter head and the blade, the outer surface of the chip retaining module body 4 is closely attached to the end surface of the chuck 1 . Preferably, the shape of the clamping surface 21 is an inwardly recessed zigzag groove, and the shape of the chip retaining surface 41 is a shape of an outwardly protruding zigzag bump, and the bump and the groove are matched. Certainly, in other practical application occasions, the clamping surface 21 can also be in other shapes, such as: V-shaped, wave-shaped, etc., and the shape of the chip-retaining surface 41 can play the role of chip-retaining if it is adapted to it.

In the utility model, the debris-retaining module body 4 also has the advantages of small size and simple processing, and the pulling equipment can further adopt auxiliary chip removal means such as noise-reducing nozzles (such as air knife nozzles), and the use of noise-reducing nozzles Air jet chip removal is directly performed on the jaw 2, which can not only reduce processing noise, but also reduce the amount of compressed air used.

The above are only specific implementations of the present utility model, but the protection scope of the present utility model is not limited thereto, and any change or replacement that is not thought of through creative labor shall be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be determined by the protection scope defined in the claims.

Claims (7)

1. a novel gear bits module for working shaft-like part chuck, the circumferential end surfaces of described chuck is provided with multiple claw, institute State claw after stretching out, clamp axial workpiece, it is characterised in that described gear bits module includes multiple gear bits module body, multiple Described gear bits module body is each attached on described chuck, and with the position one_to_one corresponding of described claw；Wherein, on described claw The clamping face of being additionally provided with, described gear bits module body is provided with gear bits face, and described claw also has and stretches out position and initial bit, when Described claw is in when stretching out, and the clamping face on described claw contacts with the circumference of flange face of described axial workpiece, works as institute Stating claw when being in initial bit, matches with the gear bits face in described gear bits module body in the clamping face on described claw.

2. the novel gear bits module of working shaft-like part chuck as claimed in claim 1, it is characterised in that described gear bits module The inner side of body is provided with a groove, and the shape of described groove is suitable with the shape of described claw, and wherein, described gear bits face is arranged Bottom at described groove.

3. the novel gear bits module of working shaft-like part chuck as claimed in claim 1 or 2, it is characterised in that described gear is considered to be worth doing Module body be shaped as sector, the circle centre position of described sector is additionally provided with a breach, the shape of described breach and described chuck Top root shape is corresponding.

4. the novel gear bits module of working shaft-like part chuck as claimed in claim 3, it is characterised in that described gear bits module The two ends of body are additionally provided with two connection boss, and described connection boss offers through hole, and described gear bits module body passes through spiral shell Bolt is fixing with the end face of described chuck after passing described through hole to be connected.

5. the novel gear bits module of working shaft-like part chuck as claimed in claim 4, it is characterised in that described gear bits module The lateral surface of body is adjacent to mutually with the end face of described chuck.

6. the novel gear bits module of working shaft-like part chuck as claimed in claim 1, it is characterised in that described clamping face Be shaped as the incised groove caved inward, the zigzag projection being shaped as outwardly in described gear bits face, described projection and Described fit depressions.

7. the novel gear bits module of working shaft-like part chuck as claimed in claim 6, it is characterised in that multiple described gear bits Module body is evenly distributed in the circumferential end surfaces of described chuck.