CN207386592U - A kind of endoporus carries on the back vehicle lathe tool - Google Patents

Abstract

The utility model discloses a cutting tool in the field of mechanical processing, which discloses a back turning tool with an inner hole, which solves the problem that the cutting blade cannot be fixed on the cutting body and affects the processing effect when there is a processing error in the prior art; A back turning tool with an inner hole includes a cutter body and a blade. The front end of the cutter body is provided with a mounting groove for placing the blade. The front end of the cutter body is provided with a pressure plate for pressing the blade. The threaded hole on the blade is threadedly connected to the cutter body. There is also a gasket between the pressure plate and the blade. The pressure plate can move up and down relative to the gasket. The clamping force between the pressure plate and the blade is adjustable, and the blade is always It is pressed tightly on the cutter body to ensure the advantages of its processing effect.

Description

A kind of inner hole back turning tool

technical field

The utility model relates to a tool in the field of mechanical processing, in particular to an inner hole back turning tool.

Background technique

A turning tool is a tool with one cutting part for turning; a turning tool is one of the most widely used tools in cutting.

In the prior art, as shown in Fig. 1, a kind of inner hole back turning tool includes a cutter body 2, which is provided with a mounting groove 4 for placing a blade 3 on the cutter body 2, and is fixed with an adjusting bolt 5 on the cutter body 2 The pressing plate 6 is used to press the blade 3 in the installation groove 4 by the pressing plate 6 to realize the connection between the blade 3 and the cutter body 2. The cross section of the blade 3 and the cutter body 2 is arranged in an L shape, which is convenient for processing the inner hole.

The disadvantage of the prior art is that the blade 3 is clamped by pressing the pressure plate 6 directly on the blade 3. When there is a machining error in the blade 3 or the pressure plate 6, it is difficult for the pressure plate 6 to compress the blade 3 on the cutter body 2. , so that during the cutting process of the workpiece, the blade 3 may loosen and fall, which will affect its processing effect.

Utility model content

The purpose of the utility model is to provide a back-turning tool with an inner hole, which has the advantages of adjustable clamping force between the pressure plate and the blade, which can always press the blade on the cutter body to ensure the processing effect.

The above-mentioned technical purpose of the utility model is achieved through the following technical solutions:

A back turning tool with an inner hole, comprising a cutter body and a blade. The front end of the cutter body is provided with a mounting groove for placing the blade. The threaded hole on the body is threadedly connected to the cutter body, and a gasket is also arranged between the pressure plate and the blade, and the pressure plate can move up and down relative to the gasket.

With the above-mentioned structure, the gasket provided between the pressure plate and the blade is used for buffering, so that the blade can only wear the gasket during the cutting process, so that when the gasket is worn, the cutting work can be continued only by replacing the gasket. This avoids the need to replace the pressure plate and saves the cost of production; and when there is a machining error in the blade or the gasket is worn, the adjustment bolt drives the pressure plate to move up and down, always compressing the blade, and firmly fixing the blade in the installation groove Inside, to ensure the cutting effect of the turning tool on the workpiece.

It is further preferred that: the end of the pressure plate opposite to the blade is provided with a connection block, and the pressure plate is provided with a waist-shaped groove for the adjustment bolt to pass through, and the cutter body is provided with a groove for the connection block to snap into, and the groove The side of the groove facing the blade is inverted to form an inclined plane 1 from the outside to the inside, and an inclined plane 2 parallel to the inclined plane 1 and driven by the inclined plane 1 is inverted on the connecting block.

With the above structure, when the pressure plate is fixed on the cutter body through the adjusting bolt, the connecting block is inserted into the groove, and the inclined plane 2 on the connecting block is driven by the inclined plane 1 on the inner wall of the groove, giving the pressure plate toward the side of the connecting block. Pull force, and then adjust the bolt and the waist groove to form a tension force between them, and firmly fix the pressure plate on the knife body, thereby enhancing the pressing force on the blade.

It is further preferred that: the lower end of the pressure plate facing the blade side protrudes downwards and the convex surface abuts against the pad, so that the cross section of the pressure plate is concave, and a connecting column is fixed on the convex part, and the pad is provided with a Connecting slot for plugging in the connecting column.

With the above structure, when the pressure plate is driven by the connection block and the inclined surface of the groove to move the pressure plate toward the side of the connection block, the connection column is inserted into the gasket, giving the gasket a displacement force toward the side of the connection block, and the pressure plate is convex. The lifting part exerts a downward movement against the pad, and under the double downward and backward force of the pad, the blade is firmly fixed on the cutter body.

It is further preferred that: the adjustment bolt is located between the knife body and the pressure plate, and a spring with two ends abutting against the knife body and the pressure plate is sheathed, and the spring gives the pressure plate an upward movement force.

With the above-mentioned structure, the force of upward movement of the pressure plate is given by the spring, which acts as a buffer and protection for the pressure plate, reduces the resistance of the blade during the cutting process, and damages the pressure plate.

Further preferably, the blade is limited on the cutter body by a locking bolt.

By adopting the above structure, the stability between the blade and the cutter body is enhanced.

It is further preferred that: an internal cooling channel through which coolant is opened in the cutter body, one end of the internal cooling channel communicates with the center of the rear end of the cutter body, and the other end faces the cutting part of the blade.

With the above structure, the cutting part of the blade is cooled by injecting coolant from the internal cooling channel, which effectively prolongs the service life of the blade, and at the same time facilitates the washing out of iron filings generated during the cutting process; furthermore, by setting one end of the internal cooling channel on The center of the rear end of the cutter body facilitates the entry of external coolant into the cutter body.

It is further preferred that: the cutter body is inserted with a number of fixing bolts for connecting with the cutter rod, and the rear end surface of the cutter body is also provided with a socket for plugging and matching with the cutter rod.

With the above-mentioned structure, the cutter body is fixed on the cutter rod by the fixing bolt, and the tooth groove provided on the cutter body is plugged and matched with the cutter rod, so as to enhance the stability between the cutter body and the cutter rod.

It is further preferred that: the end of the internal cooling passage facing the cutter rod is inserted with a water hole connecting pipe for communicating with the cutter rod.

With the above-mentioned structure, through the water hole connection pipe, the surface cooling liquid seeps out from the alveolar.

In summary, the utility model has the following beneficial effects:

1. By setting the gasket between the pressure plate and the blade, the damage of the blade to the pressure plate can be effectively avoided, and the effect of cost saving can be achieved;

2. Through the inclined plane transmission between the connecting block and the groove on one side of the pressure plate, the abutment between the protrusion on the other side and the gasket, and the tension formed by the connecting column on the connection groove, the adjustment bolt and the pressure plate are pressed against the gasket. , to produce a double force of backward and downward on the gasket, stably fix the blade in the installation groove, and enhance the cutting effect of the turning tool on the workpiece.

Description of drawings

Fig. 1 is a structural schematic diagram of the prior art, showing the overall structure;

Fig. 2 is a structural schematic diagram of the present embodiment, showing the overall structure;

Fig. 3 is a partial structural schematic diagram of the present embodiment, showing the connection structure between the pressing plate and the blade;

Fig. 4 is a partial structural schematic diagram of this embodiment, showing the connection structure of the pressing plate.

In the figure, 1, cutter bar; 2, cutter body; 3, blade; 4, installation groove; 5, adjusting bolt; 6, pressure plate; 7, connecting block; 8, connecting column; 9, groove; 10, inclined plane ;11, slope two; 12, gasket; 13, connecting groove; 14, waist groove; 15, spring; 16, internal cooling channel; 17, water hole connecting pipe; 18, tooth socket; 19, fixing bolt; 20 , Lock bolts.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is described in further detail.

A kind of inner hole back turning tool, as shown in Figures 2 and 3, includes a cutter body 2, a cutter bar 1 and a blade 3, the front end of the cutter body 2 is provided with a mounting groove 4, and the rear end is fixed to the cutter bar 1 by a fixing bolt 19 In one body, a pressure plate 6 is fixed on the cutter body 2 through an adjusting bolt 5, a gasket 12 is placed between the pressure plate 6 and the blade 3, and one end of the pressure plate 6 is pressed against the gasket 12, and a pressing force is applied to the blade 3, and the The blade 3 is compressed and limited in the installation groove 4 .

Referring to 3 and 4, the pressure plate 6 is provided with a waist-shaped groove 14, and the adjusting bolt 5 passes through the waist-shaped groove 14 and is threadedly connected with the threaded hole provided on the cutter body 2 to limit the position of the pressure plate 6. A connecting block 7 is fixed on the lower end of the pressing plate 6 relative to the blade 3, and the cutter body 2 is provided with a groove 9 for inserting the connecting block 7. 11. The groove 9 is correspondingly inverted into a slope 10 parallel to the slope 2 11 and in contact with the slope 2 11. When the pressure plate 6 is fixed by the adjusting bolt 5, the slope 2 11 on the connecting block 7 and the groove 9 slope 10 Always contradict.

In this embodiment, a spring 15 is sheathed on a section of the adjusting bolt 5 between the pressure plate 6 and the cutter body 2, and the two ends of the spring 15 are in contact with the pressure plate 6 and the cutter body 2 respectively, and apply an upward movement force to the pressure plate 6. .

The lower end of one side of the above-mentioned pressing plate 6 relative to the connecting block 7 protrudes downwards, so that the cross-section of the pressing plate 6 is concave, and the raised portion abuts against the upper end of the gasket 12, and a connecting column 8 is vertically fixed at the protrusion, and the pad The sheet 12 is provided with a connecting groove 13 for inserting the connecting column 8. When the pressing plate 6 is displaced toward the connecting block 7, the connecting column 8 abuts against the connecting groove 13, giving the gasket 12 a displacement force toward the connecting block 7. At the same time, the pressure plate 6 exerts a moving force on the gasket 12 to fix the blade 3 in the limiting groove.

In this embodiment, a through hole is opened in the center of the blade 3, and a locking bolt 20 passes through the through hole and is threadedly connected with the cutter body 2, so that the blade 3 is fixed in the installation groove 4, and the stability of the blade 3 and the cutter body 2 is strengthened. sex.

The connecting surface of the cutter body 2 and the cutter bar 1 is provided with tooth sockets 18 that are inserted into each other, and the fixing bolt 19 passes through the cutter body 2 and is threadedly connected with the cutter bar 1, so that the cutter body 2 is firmly fixed on the cutter bar 1 ; In this embodiment, there are three fixing bolts 19 .

Referring to Figures 2 and 3, in this implementation, the cutter body 2 and the inside of the cutter bar 1 are provided with a communicating internal cooling passage 16, and one end of the internal cooling passage 16 runs through the outside of the cutter body 2, and the opening faces the cutting part of the blade 3; during cutting, The cooling liquid is sprayed on the cutting part of the blade 3 through the internal cooling channel 16 to cool down the temperature of the blade 3 .

In this implementation, the internal cooling channel 16 is located at the opening of the cutter body 2 towards the end of the cutter bar 1, and a water hole connecting pipe 17 is inserted, and the other end of the water hole connecting pipe 17 is inserted into the inner cooling channel 16 on the cutter bar 1 Inside.

Working principle: When installing, first fix the blade 3 in the installation groove 4 through the locking bolt 20, then place the gasket 12 on the blade 3, and then insert the connecting column 8 at one end of the pressure plate 6 into the connection of the gasket 12 In the groove 13, the connecting block 7 at the other end is inserted in the groove 9, and then the adjusting bolt 5 passes through the waist groove 14 and the spring 15 and is threadedly connected with the cutter body 2, gradually exerting a downward force on the pressure plate 6, Under the driving effect of the inclined plane, the pressure plate 6 drives the gasket 12 to move downward and at the same time applies the displacement of the gasket 12 towards the end of the connecting block 7, and then under the double force, the blade 3 is firmly fixed on the cutter body 2.

This specific embodiment is only an explanation of the utility model, and it is not a limitation of the utility model. After reading this description, those skilled in the art can make modifications to the embodiment without creative contribution according to needs, but as long as it is within the utility model All new inventions are protected by patent law.

Claims (8)

1. a kind of endoporus carries on the back vehicle lathe tool, including cutter hub (2) and blade (3), cutter hub (2) front end, which offers, places blade (3) Mounting groove (4), it is characterized in that：Cutter hub (2) front end is provided with to compress the pressing plate (6) of blade (3), the pressing plate (6) it is connected to by the threaded hole thread fitting in adjusting bolt (5) and cutter hub (2) on cutter hub (2), the pressing plate (6) and knife Gasket (12) is additionally provided between piece (3), the pressing plate (6) can upper and lower displacement with respect to gasket (12).

2. a kind of endoporus back of the body vehicle lathe tool according to claim 1, it is characterized in that：The one of pressing plate (6) opposing blades (3) End, which is equipped on link block (7) and pressing plate (6), offers a waist type groove (14) passed through for adjusting bolt (5), on cutter hub (2) Offer the groove (9) being caught in for link block (7), and the groove (9) be set as towards blade (3) one side it is oblique within outside Face one (10), fall on the link block (7) to be equipped with it is parallel with inclined-plane one (10) and with the inclined-plane two of inclined-plane one (10) inclined-plane transmission (11)。

3. a kind of endoporus back of the body vehicle lathe tool according to claim 2, it is characterized in that：The pressing plate (6) is towards blade (3) one side Lower end is abutted towards lower convexity and convex surfaces with gasket (12), and it is in concave to make its pressing plate (6) section, and one is fixed on boss Connecting pole (8) offers the link slot (13) for connecting pole (8) grafting on the gasket (12).

4. a kind of endoporus back of the body vehicle lathe tool according to Claims 2 or 3, it is characterized in that：The adjusting bolt (5) is in cutter hub (2) spring (15) that both ends abut respectively with cutter hub (2) and pressing plate (6), the spring are arranged on one section between pressing plate (6) (15) give pressing plate (6) and move active force upward.

5. a kind of endoporus back of the body vehicle lathe tool according to claim 1-3 any one, it is characterized in that：The blade (3) passes through Clamping screw (20) is limited on cutter hub (2).

6. a kind of endoporus back of the body vehicle lathe tool according to claim 1, it is characterized in that：Logical cooling is offered in the cutter hub (2) The inner cooling path (16) of liquid, described inner cooling path (16) one end are communicated in cutter hub (2) back-end central, and the other end is towards blade (3) Cutting portion.

7. a kind of endoporus back of the body vehicle lathe tool according to claim 6, it is characterized in that：Several use are inserted on the cutter hub (2) In be further opened on the fixing bolt (19) being connected with knife bar (1), cutter hub (2) rear end end face with the mating tooth of knife bar (1) Slot (18).

8. a kind of endoporus back of the body vehicle lathe tool according to claim 7, it is characterized in that：The inner cooling path (16) is towards knife bar (1) it is inserted on one end for water hole connecting tube (17) coconnected with knife bar (1).