CN215824288U

CN215824288U - Clamp for machining excircle by using hard alloy

Info

Publication number: CN215824288U
Application number: CN202121794430.7U
Authority: CN
Inventors: 曾国勇
Original assignee: Sichuan Tungsten Carbide Co ltd
Current assignee: Sichuan Tungsten Carbide Co ltd
Priority date: 2021-08-03
Filing date: 2021-08-03
Publication date: 2022-02-15
Anticipated expiration: 2031-08-03

Abstract

The utility model discloses a fixture for processing an excircle by using hard alloy, which comprises a first fixing component and a second fixing component, wherein the first fixing component is arranged on a chuck of a lathe; the first fixing assembly comprises a first connecting seat, a first spring, a first inner core and a first end cover, the left end of the first connecting seat is provided with a first connecting portion, the right end of the first connecting seat is provided with a first cavity, a first through hole is formed in the first end cover, the first inner core is integrally of a T-shaped structure and is arranged in the first cavity in a sliding mode, the first spring is arranged in the first cavity, one end of the first spring is in contact with the side wall of the first cavity, and the other end of the first spring is in contact with the first inner core. The utility model can clamp the workpiece to be processed in actual use, can finish the processing of the outer circular surface once, and can improve the processing quality of the outer circular surface of the workpiece.

Description

Clamp for machining excircle by using hard alloy

Technical Field

The utility model relates to the technical field of clamps, in particular to a clamp for machining an excircle by using hard alloy.

Background

The hard alloy is an alloy material which is made of hard compounds of refractory metals and bonding metals through a powder metallurgy process; the hard alloy has a series of excellent performances of high hardness, wear resistance, good strength and toughness, heat resistance, corrosion resistance and the like, particularly high hardness and wear resistance, basically keeps unchanged even at the temperature of 500 ℃, and still has high hardness at the temperature of 1000 ℃; since the hardness is high, grinding is generally adopted.

The outer circle of a workpiece needs to be machined when the shaft-type workpiece is machined, in the prior art, the workpiece is generally clamped by a chuck on a lathe, then the outer circle surface is machined, the workpiece is taken down after the machining is finished, then one machined end is clamped, and then the other end of the workpiece is clamped; when workers process the outer circular surfaces at two ends, errors are easily caused, the outer circular surfaces are in structures similar to steps, and the processing quality of the surfaces of workpieces is poor.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a clamp for processing an outer circle by using hard alloy, which can clamp a workpiece to be processed in actual use, can finish the processing of the outer circle surface at one time and can improve the processing quality of the outer circle surface of the workpiece.

In order to solve the technical problems, the technical scheme adopted by the utility model is as follows:

a fixture for processing an excircle by using hard alloy comprises a first fixing component and a second fixing component, wherein the first fixing component is used for being arranged on a chuck of a lathe, and the second fixing component is used for being arranged on a tailstock of the lathe;

the first fixing assembly comprises a first connecting seat, a first spring, a first inner core and a first end cover, the left end of the first connecting seat is provided with a first connecting part, the right end of the first connecting seat is provided with a first cavity, the first end cover is provided with a first through hole, the first inner core is integrally of a T-shaped structure and is arranged in the first cavity in a sliding mode, the first spring is arranged in the first cavity, one end of the first spring is in contact with the side wall of the first cavity, the other end of the first spring is in contact with the first inner core, after the first end cover is installed on the first connecting seat, the right end of the first inner core penetrates through the first through hole, the small end of the first inner core extends out of the first end cover, and the small end part of the first inner core is provided with a first conical structure;

the second fixing assembly comprises a thimble body, a second connecting seat, a second end cover, a second spring and a second inner core, the thimble body is used for being connected with a tailstock of the lathe, the second connecting seat is connected to the thimble body, a second cavity is arranged on the second connecting seat, a second through hole is formed in the second end cover, the second inner core is of a T-shaped structure and is arranged in the second cavity in a sliding mode, the second spring is located in the second cavity, one end of the second spring is in contact with the second cavity, the other end of the second spring is in contact with the second inner core, the small end of the second inner core extends out of the second end cover after the second end cover is connected to the second connecting seat, and the end part of the small end of the second inner core is provided with a second conical structure; the shapes of the first and second conical structures are matched with the shape of the fabrication hole on the workpiece.

Wherein, first end cover passes through the screw connection with first connecting seat.

Wherein, the second end cover passes through the screw connection with the second connecting seat.

Further optimize, be provided with spacing boss on the first connecting seat, spacing boss left side terminal surface forms a spacing face.

Further optimize, first fixed subassembly still includes movable plate and adjusting part, and the movable plate setting is in first box, and the left end and the movable plate contact of first spring, adjusting part set up on first connecting seat and be connected with the movable plate, and adjusting part is used for driving the movable plate and removes in first cavity.

Further inject, the adjusting part includes first sloping block, second sloping block and screw rod, and first sloping block all has an inclined plane with the second sloping block, and the second sloping block is connected with the movable plate, the screw rod passes and extends into in the first cavity behind the first connecting seat, and first sloping block is located the first cavity and rotates with the screw rod to be connected, and the inclined plane of first sloping block mutually supports with the inclined plane of second sloping block.

Wherein the screw is a bolt with a head.

Compared with the prior art, the utility model has the following beneficial effects:

the utility model mainly comprises a first fixing component and a second fixing component, wherein in actual use, a first connecting seat in the first fixing component is clamped on a chuck of a lathe, then a thimble body in a second fixing drill is connected on a tailstock of the lathe, a first inner core in the first fixing component and a second inner core in the second fixing component position a workpiece, the workpiece is horizontally held when clamped, the first inner core and the second inner core are aligned to process holes (central holes) at two ends of the workpiece, then the tailstock is pushed, so that a first end cover and a second end cover are contacted with the end faces of the workpiece, and when the end faces at two ends of the workpiece are respectively tightly connected with the first end cover and the second end cover, the aim of friction transmission can be realized; meanwhile, the second connecting seat is connected to the thimble body, so that the second connecting seat can be ensured to rotate, the purpose of one-step machining can be realized when the outer circular surface of the workpiece is turned, the other end does not need to be machined after one end is machined, and the purpose of one-step machining can be realized on the outer circular surface of the workpiece; the clamping device can clamp a workpiece to be processed in actual use, can finish processing of the outer circular surface at one time, and can improve the processing quality of the outer circular surface of the workpiece;

the first inner core and the second inner core are movably arranged, so that positioning can be realized by taking the fabrication hole as a reference when a workpiece is fixed, and the clamping precision is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic view of the overall structure of the first fixing assembly of the present invention.

Fig. 2 is a schematic view of the overall structure of the second fixing assembly of the present invention.

FIG. 3 is a schematic view of the present invention in use.

Reference numerals:

the method comprises the following steps of 1, a chuck, 2, a tailstock, 3, a workpiece, 4 screws, 5 limiting bosses, 6 moving plates, 7 adjusting components, 8 first inclined blocks, 9 second inclined blocks, 10 screw rods and 11 process holes;

101 a first securing assembly, 1011 a first connector, 1012 a first spring, 1013 a first inner core, 1014 a first end cap, 1015 a first connector, 1016 a first cavity, 1017 a first through hole, 1018 a first tapered configuration;

201 fixed subassembly, 2011 thimble body, 2012 second connecting seat, 2013 second end cover, 2014 second spring, 2015 second inner core, 2016 second cavity, 2017 second through-hole, 2018 second toper structure.

Detailed Description

In the following, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the embodiments of the utility model. Accordingly, the drawings and description are to be regarded as illustrative in nature, and not as restrictive.

In the description of the embodiments of the present invention, it should be understood that the terms "length", "vertical", "horizontal", "top", "bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only used for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the embodiments of the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. Specific meanings of the above terms in the embodiments of the present invention can be understood by those of ordinary skill in the art according to specific situations.

In embodiments of the utility model, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise the first and second features being in direct contact, or the first and second features being in contact, not directly, but via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.

The following disclosure provides many different embodiments or examples for implementing different configurations of embodiments of the utility model. To simplify the disclosure of embodiments of the utility model, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit embodiments of the utility model. Furthermore, embodiments of the present invention may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed.

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

Example one

Referring to fig. 1-3, the embodiment discloses a fixture for processing an outer circle by cemented carbide, which comprises a first fixing component 101 and a second fixing component 201, wherein the first fixing component 101 is used for being installed on a chuck 1 of a lathe, and the second fixing component 201 is used for being installed on a tailstock 2 of the lathe;

the first fixing assembly 101 comprises a first connecting seat 1011, a first spring 1012, a first inner core 1013 and a first end cap 1014, wherein the left end of the first connecting seat 1011 has a first connecting part 1015, the right end of the first connecting seat is provided with a first cavity 1016, the first end cap 1014 is provided with a first through hole 1017, the first inner core 1013 is integrally in a T-shaped structure and is slidably arranged in the first cavity 1016, the first spring 1012 is arranged in the first cavity 1016, one end of the first spring is in contact with the side wall of the first cavity 1016, the other end of the first spring is in contact with the first inner core 1013, after the first end cap 1014 is mounted on the first connecting seat 1011, the right end of the first inner core 1013 passes through the first through hole 1017, the small end of the first inner core 1013 extends out of the first end cap 1014, and the small end of the first inner core 1013 is provided with a first tapered structure 1018;

the second fixing component 201 comprises a thimble body 2011, a second connecting seat 2012, a second end cover 2013, a second spring 2014 and a second inner core 2015, the thimble body 2011 is used for being connected with a tailstock 2 of a lathe, the second connecting seat 2012 is connected with the thimble body 2011, a second cavity 2016 is arranged on the second connecting seat 2012, a second through hole 2017 is arranged on the second end cover 2013, the second inner core 2015 is in a T-shaped structure and is slidably arranged in the second cavity 2016, the second spring 2014 is positioned in the second cavity 2016, one end of the second spring is in contact with the second cavity 2016, the other end of the second spring is in contact with the second inner core 2015, the second end cover 2013 extends out of the small end of the second inner core 2015 after being connected with the second connecting seat 2012, and the small end of the second inner core 2015 is provided with a second tapered structure 2018; the shapes of the first and second conical structures are matched with the shape of the fabrication hole 11 on the workpiece 3.

The utility model mainly comprises a first fixing component 101 and a second fixing component 201, in the practical use, a first connecting seat 1011 in the first fixing component 101 is clamped on a chuck 1 of a lathe, then a thimble body 2011 in a second fixing drill is connected on a tailstock 2 of the lathe, a first inner core 1013 in the first fixing component 101 and a second inner core 2015 in the second fixing component 201 position a workpiece 3, when the workpiece 3 is clamped, the workpiece 3 is horizontally held, the first inner core 1013 and the second inner core 2015 are aligned to process holes 11 (central holes) at two ends of the workpiece 3, then the tailstock 2 is pushed, so that a first end cover 1014 and a second end cover 2013 are contacted with the end surface of the workpiece 3, and when the end surfaces at two ends of the workpiece 3 are respectively tightly contacted with the first end cover 1014 and the second end cover 2013, the purpose of friction transmission can be realized; meanwhile, the second connecting seat 2012 is connected to the thimble body 2011, so that the second connecting seat 2012 can be ensured to rotate, the purpose of one-time machining can be realized during turning of the outer circular surface of the workpiece 3, the other end of the workpiece is not required to be machined after one end of the workpiece is machined, and the purpose of one-time machining and forming of the outer circular surface of the workpiece 3 can be realized; the utility model can clamp the workpiece 3 to be processed in actual use, can finish the processing of the outer circular surface once, and can improve the processing quality of the outer circular surface of the workpiece 3.

The first inner core 1013 and the second inner core 2015 are movably arranged, so that positioning can be performed by taking the fabrication hole 11 as a reference when the workpiece 3 is fixed, and the clamping precision is improved.

It should be noted that, in the present embodiment, after the second connecting seat 2012 is connected to the thimble body 2011, the second connecting seat 2012 can achieve the purpose of following and rotating, that is, in the present embodiment, the second connecting seat 2012 is connected to an end of the thimble body 2011 so as to achieve the purpose of the second connecting seat 2012 rotating along with the workpiece 3.

In this embodiment, the first end cap 1014 is connected to the first connector block 1011 by a screw 4; the second end cap 2013 is connected with the second connecting seat 2012 through a screw 4.

Therefore, the first end cover and the second end cover are convenient to mount and dismount in practical use, and the first inner core and the second inner core are convenient to maintain.

Further, in this embodiment, the first connecting seat 1011 is provided with a limiting boss 5, and a limiting surface is formed on the left end surface of the limiting boss 5; the first connecting seat 1011 can be positioned when mounted on the chuck 1 of the lathe by the formed limiting surface.

Example two

The present embodiment is further optimized based on the first embodiment, in the present embodiment, the first fixing assembly 101 further includes a moving plate 6 and an adjusting assembly 7, the moving plate 6 is disposed in the first box, the left end of the first spring 1012 contacts with the moving plate 6, the adjusting assembly 7 is disposed on the first connecting seat 1011 and connected to the moving plate 6, and the adjusting assembly 7 is configured to drive the moving plate 6 to move in the first cavity 1016.

In this way, the adjusting assembly 7 is arranged to adjust the moving plate 6, so as to adjust the pretightening force of the first spring 1012, in practical use, the length of the first inner core 1013 extending out of the first end cap 1014 is longer, so that the force applied to the end of the workpiece 3 by the first inner core 1013 is larger, the first conical structure 1018 on the first inner core 1013 is more closely matched with the fabrication hole 11 of the workpiece 3, the positioning precision during clamping can be further improved during installation, and the surface machining precision of the workpiece 3 is further improved.

Wherein, in this embodiment, adjusting part 7 includes first sloping block 8, second sloping block 9 and screw rod 10, and first sloping block 8 all has an inclined plane with second sloping block 9, and second sloping block 9 is connected with movable plate 6, screw rod 10 passes first connecting seat 1011 and extends into first cavity 1016 in, and first sloping block 8 is located first cavity 1016 and is connected with screw rod 10 rotation, and the inclined plane of first sloping block 8 and the inclined plane of second sloping block 9 mutually support.

Therefore, in practical use, the screw 10 is rotated to drive the first inclined block 8 to move up and down, and due to the fact that the inclined surface of the first inclined block 8 is matched with the inclined surface of the second inclined block 9, the first inclined block 8 can push the second inclined block 9 to move towards the right side when moving downwards, and then the moving plate 6 is pushed to push the first spring 1012 to move, and therefore the adjustment of the pretightening force of the first spring 1012 can be achieved.

Further preferably, the screw 10 is a bolt with a head, so that the adjustment is more convenient.

While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the utility model.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, it should be noted that any modifications, equivalents and improvements made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. The utility model provides a anchor clamps of carbide processing excircle which characterized in that: the lathe tailstock fixing device comprises a first fixing component and a second fixing component, wherein the first fixing component is used for being installed on a chuck of a lathe, and the second fixing component is used for being installed on a tailstock of the lathe;

2. The fixture for machining the outer circle of the hard alloy as claimed in claim 1, wherein: the first end cover is connected with the first connecting seat through screws.

3. The fixture for machining the outer circle of the hard alloy as claimed in claim 1, wherein: the second end cover is connected with the second connecting seat through screws.

4. The fixture for machining the outer circle of the hard alloy as claimed in claim 1, wherein: the first connecting seat is provided with a limiting boss, and the left end face of the limiting boss forms a limiting face.

5. The fixture for machining an outer circle of cemented carbide according to any one of claims 1 to 4, wherein: the first fixing assembly further comprises a moving plate and an adjusting assembly, the moving plate is arranged in the first box body, the left end of the first spring is in contact with the moving plate, the adjusting assembly is arranged on the first connecting seat and connected with the moving plate, and the adjusting assembly is used for driving the moving plate to move in the first cavity.

6. The fixture for machining the outer circle of the hard alloy as claimed in claim 5, wherein: the adjusting assembly comprises a first inclined block, a second inclined block and a screw rod, the first inclined block and the second inclined block are provided with inclined planes, the second inclined block is connected with the movable plate, the screw rod penetrates through the first connecting seat and then extends into the first cavity, the first inclined block is located in the first cavity and is connected with the screw rod in a rotating mode, and the inclined planes of the first inclined block and the inclined planes of the second inclined block are matched with each other.

7. The fixture for machining the outer circle of the hard alloy as claimed in claim 6, wherein: the screw is a bolt with a head.