CN216227801U

CN216227801U - Knurling tool with rotary tool body capable of being used on machining center

Info

Publication number: CN216227801U
Application number: CN202122753804.7U
Authority: CN
Inventors: 杨建成
Original assignee: Dongguan Changan Yuesheng Precision Tool Factory
Current assignee: Dongguan Changan Yuesheng Precision Tool Factory
Priority date: 2021-11-10
Filing date: 2021-11-10
Publication date: 2022-04-08
Anticipated expiration: 2031-11-10

Abstract

The application discloses rotatory annular knurl cutter that can be used to machining center of blade belongs to the technical field of processing cutter, and it includes the cutter arbor and rotates the sword grain of installing in cutter arbor one end, and the sword grain is the round platform shape, and the outer peripheral face of sword grain is provided with the processing tooth, and the central axis of sword grain has the contained angle with the sword axle line, and the number of degrees of contained angle is located between 0-90. This application has the effect of being convenient for stably realize the planar annular knurl processing to non-axle type part.

Description

Knurling tool with rotary tool body capable of being used on machining center

Technical Field

The application relates to the field of machining tools, in particular to a knurling tool with a tool body capable of rotating and being used on a machining center.

Background

Knurling is generally a process of rolling straight lines or cross-hatched lines on the peripheral surface of a shaft workpiece. The knurling tool refers to a tool for rolling and processing straight lines or reticulate patterns on the surface of a workpiece, and generally comprises a tool bar and tool grains for processing the knurling patterns. For example, the outer surfaces of parts such as a micrometer sleeve, a twisting lever wrench and the like are processed, and after the shaft workpiece is knurled, the aesthetic feeling can be increased, and the shaft workpiece is convenient to hold.

The knurling tool is generally used for turning, and the knurling tool used for a lathe generally comprises a tool bar and a tool grain, wherein the tool grain is rotatably arranged at one end of the tool bar, and the tool grain is circular. The machining mode is that a shaft workpiece to be machined is usually fixed to a chuck of a lathe, the lathe drives a cutter bar to move in the horizontal direction on the end face to be machined, and the cutter bar and the shaft workpiece fixed on the lathe are combined to rotate, so that the cutter particles perform knurling on the end face of the workpiece fixed on the lathe.

In view of the above-described related art, the inventors have considered that when a non-shaft-like part is fixed to a chuck of a lathe or a chuck of the lathe is rotated at a high speed, a large centrifugal force is likely to be generated in the non-shaft-like part, and it is difficult to stably perform surface processing on the non-shaft-like part with the cutting grains of the knurling tool in the related art.

SUMMERY OF THE UTILITY MODEL

In order to facilitate the stable annular knurl processing of realizing non-axle type part plane, this application provides a rotatory annular knurl cutter that can be used to machining center of blade.

The application provides a rotatory annular knurl cutter that can be used to machining center of blade adopts following technical scheme:

a knurling tool with a tool body capable of rotating and being used in a machining center comprises a tool bar and tool grains rotatably mounted at one end of the tool bar, wherein the tool grains are in a circular truncated cone shape, machining teeth are arranged on the peripheral surface of the tool grains, an included angle is formed between the central axis of the tool grains and the axis of the tool bar, and the included angle is 0-90 degrees.

By adopting the technical scheme, the cutter bar is arranged on the rotating shaft of the milling machine, the cutter bar is driven by the milling machine to rotate, then a workpiece is fixed on a processing table of the milling machine, the end surface to be processed of the workpiece faces towards the knurling cutter in a plane mode, when the cutter bar is driven by the milling machine to rotate around the axis of the cutter bar, cutter particles move circumferentially around the axis of the cutter bar, and simultaneously rotate around the axis of the cutter particles, so that when the knurling cutter feeds the workpiece in the direction of the workpiece, the processing teeth on the outer peripheral surface of the cutter particles realize the planar knurling processing of the workpiece. The cutter bar is arranged on the milling machine rotating shaft, so that knurling processing can be carried out on the plane of the workpiece, the operation of knurling processing on the plane of the workpiece is simple and convenient for workers, and meanwhile, the position of the workpiece is fixed during knurling processing, so that the workpiece which is difficult to be fixedly arranged on a lathe chuck or the workpiece which generates large centrifugal force during rotation can be stably processed.

Optionally, a fixed shaft is arranged outside the cutter bar, the cutter grains are provided with mounting holes penetrating along the axis direction of the cutter grains, the fixed shaft penetrates through the mounting holes of the cutter grains and is in running fit with the cutter grains, and the fixed shaft is fixed with the cutter bar through a fixing piece.

Through adopting above-mentioned technical scheme, wear to locate the mounting hole of sword grain and can rotate the sword grain and install in the cutter arbor through the mounting with the fixed axle along the axis of sword grain and fixed through the mounting to make the staff carry out the easy and simple to handle of installing to sword grain and cutter arbor.

Optionally, the fixing part is a screw in threaded connection with the cutter bar, the screw abuts against one end of the fixing shaft, and one end, far away from the screw, of the fixing shaft abuts against the cutter bar.

By adopting the technical scheme, the fixing of the position of the fixing shaft can be realized by screwing the screw to enable the screw to be abutted against one end of the fixing shaft penetrating through the cutter particles, so that the fixing operation of the fixing shaft by a worker is simple and convenient.

Optionally, the axial direction of the screw is perpendicular to the axial direction of the tool bar.

Through adopting above-mentioned technical scheme, the staff is difficult for touching mutually with the cutter arbor when revolving to the screw to it is fixed to be convenient for the staff application of force to revolve to the screw.

Optionally, one end of the fixing shaft facing the screw is in a wedge shape.

Through adopting above-mentioned technical scheme, the screw supports the fastening timing to the fixed axle, has great area of contact between screw and the fixed axle to be favorable to further guaranteeing the stability when the screw is fixed the fixed axle.

Optionally, one end of the fixing shaft inserted into the mounting hole is in a shape of a circular truncated cone, and the cross-sectional area of the end, close to the cutter grains, of the fixing shaft is smaller than that of the end, far away from the cutter grains, of the fixing shaft.

By adopting the technical scheme, when the fixing shaft penetrates through the mounting hole of the knife grain along the axis direction of the knife grain, the fixing shaft and the hole wall of the mounting hole have certain gap transition, and then a worker can insert the fixing shaft into the mounting hole of the knife grain conveniently.

Optionally, an included angle between the central axis of the cutter particle and the axis of the cutter rod is 30-60 degrees.

By adopting the technical scheme, the arrangement that the included angle between the axis of the cutter particles and the axis of the cutter rod is 30-60 degrees is beneficial to ensuring the structural strength of the knurling cutter and simultaneously ensuring the knurling processing quality of the plane of a workpiece.

Optionally, an installation groove is formed in one end of the cutter bar, the installation groove extends to the side wall of the cutter bar along the axis direction perpendicular to the cutter bar, and the cutter particles are installed in the installation groove.

Through adopting above-mentioned technical scheme, the staff can observe through the side notch of mounting groove to the in service behavior of tool setting grain is audio-visual to be convenient for the staff overhauls and maintains the tool setting grain.

Optionally, one of the groove walls of the mounting groove is parallel to one of the processing teeth on the outer peripheral surface of the cutter blade.

Through adopting above-mentioned technical scheme, the cell wall of mounting groove plays the indicative function when installing the cutter grain to the difficult condition that appears the installation dislocation when making the installation of cutter grain.

Optionally, a holding portion with a polygonal cross section is integrally connected outside the cutter bar, and each corner of the holding portion is in arc transition arrangement.

Through adopting above-mentioned technical scheme, the staff's application of force of being convenient for that sets up of the portion of gripping removes the cutter arbor, and simultaneously, the circular arc transition of each edges and corners department of the portion of gripping is difficult for the fish tail when making the staff remove the cutter arbor, and the security is strong.

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

1. the cutter bar is arranged on the milling machine rotating shaft, so that knurling processing can be carried out on the plane of the workpiece, the operation of knurling processing on the plane of the workpiece is simple and convenient for workers, and meanwhile, the position of the workpiece is fixed during knurling processing, so that the workpiece which is difficult to be fixedly arranged on a lathe chuck or the workpiece which generates large centrifugal force during rotation can be stably processed.

2. The fixing shaft penetrates through the mounting hole of the cutter particles along the central axis of the cutter particles and is fixed through the fixing piece, so that the cutter particles can be rotatably mounted on the cutter bar, and the operation of mounting between the cutter particles and the cutter bar by workers is simple and convenient.

3. The arrangement that the included angle between the central axis of the cutter particles and the axis of the cutter bar is 30-60 degrees is beneficial to ensuring the structural strength of the knurling cutter and simultaneously ensuring the knurling processing quality of the plane of the workpiece.

Drawings

Fig. 1 is a schematic view of a state in which a cutter blade performs a knurling process on a plane of a workpiece in example 1 of the present application.

Fig. 2 is a partial sectional view of the cutter bar and the cutter granule in embodiment 1 of the present application.

Fig. 3 is a partial cross-sectional view of the cutter bar and cutter grain in embodiment 2 of the present application.

Fig. 4 is a partial sectional view of the cutter bar and cutter grain in embodiment 3 of the present application.

Description of reference numerals:

1. a cutter bar; 2. cutting grains; 201. a first plane; 202. a second plane; 3. mounting grooves; 301. a mounting surface; 302. a guide surface; 4. processing teeth; 5. a fixed shaft; 501. a fixed part; 502. a rotating part; 503. a tightening part; 6. mounting holes; 7. a first fixing hole; 8. a second fixing hole; 9. a fixing member; 10. a grip portion; 11. a workpiece; 111. processing a plane; 112. a planar tooth; 12. a threaded bore.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

Example 1.

The embodiment of the application discloses a rotary knurling tool which can be used for a machining center of a tool body. Taking the example of processing the workpiece 11 shown in fig. 1 as an example, the workpiece 11 has two processing planes 111 arranged in parallel, wherein a plurality of planar teeth 112 which are uniformly distributed in the circumferential direction and arranged in a closed loop are arranged at the top of one of the processing planes 111, and the planar teeth 112 need to be knurled after the workpiece 11 is produced.

Referring to fig. 1 and 2, the knurling tool includes a tool bar 1 and a tool bit 2, the tool bar 1 is substantially cylindrical, and the tool bar 1 is fixedly mounted on a rotating shaft of a milling machine. Mounting groove 3 has been seted up to cutter arbor 1's one end, and cutter arbor 1 is run through along the direction of the 1 axis of perpendicular to cutter arbor to mounting groove 3 promptly has two notches of the 1 axis direction of perpendicular to cutter arbor to the staff installs sword grain 2 in mounting groove 3.

With continued reference to fig. 1 and 2, the cutter particle 2 is in a truncated cone shape, the peripheral surface of the cutter particle 2 is provided with a plurality of processing teeth 4 which are uniformly distributed in the circumferential direction around the axis of the cutter particle 2, and the processing teeth 4 of the cutter particle 2, which are far away from the cutter bar 1, penetrate out of the mounting groove 3, so that the processing teeth 4 can perform knurling processing on the plane teeth 112 of the workpiece 11.

Referring to fig. 2, the mounting groove 3 has two opposite and parallel mounting surfaces 301, an included angle α is formed between each of the two mounting surfaces 301 and the axis of the tool bar 1, the included angle α is 0-90 °, and in the embodiment of the present application, the included angle α between each of the mounting surfaces 301 and the axis of the tool bar 1 is 45 °. An included angle beta is formed between the central axis of the knife particle 2 and the axis of the knife rod 1, the degree of the included angle beta is 0-90 degrees, the degree of the included angle beta between the central axis of the knife particle 24 and the axis of the knife rod 13 is 45 degrees, the degree of the included angle alpha and the degree of the included angle beta are complementary angles, namely when the degree of the included angle beta is selected to be 30 degrees, the degree of the included angle alpha is selected to be 60 degrees. When the cutter particles 2 are arranged in the mounting groove 3 and the processing teeth 4 of the cutter particles 2 penetrate out of the mounting groove 3, the processing teeth 4 can conveniently realize the knurling processing of the workpiece plane.

Continuing to refer to fig. 2, a cylindrical fixed shaft 5 is disposed outside the cutter bar 1, the fixed shaft 5 includes a fixed portion 501, a rotating portion 502 and a tightening portion 503, the fixed portion 501 is in a truncated cone shape, the rotating portion 502 is in a cylindrical shape and the rotating portion 502 is integrally connected to one end of the fixed portion 501 with a larger area, the tightening portion 503 is integrally connected to one end of the rotating portion 502 away from the fixed portion 501, and one end of the tightening portion 503 away from the rotating portion 502 is in a wedge shape.

Referring to fig. 1 and 2, a mounting hole 6 penetrating through the knife particle 2 along the central axis of the knife particle 2 is provided, two ends of the knife particle 2 are respectively provided with a first plane 201 and a second plane 202, the area of the first plane 201 is smaller than that of the second plane 202, a first fixing hole 7 penetrating through the mounting surface 301 close to the first plane 201 and being in a truncated cone shape is provided on the mounting surface 3 close to the first plane 201, a second fixing hole 8 penetrating through the mounting surface 301 close to the second plane 202 and being in a truncated cone shape is provided on the mounting surface 301 close to the mounting surface 3, one end of the fixing portion 501, which is far away from the rotating portion 502, sequentially penetrates through the second fixing hole 8 and the mounting hole 6 along the central axis direction of the knife particle 2 and is located in the first fixing hole 7 and abuts against the hole wall of the first fixing hole 7, that is, namely, the fixing shaft 5 penetrates through the mounting hole 6 of the knife particle 2 and abuts against the knife bar 1.

With continued reference to fig. 1 and 2, the rotating portion 502 is located in the second fixing hole 8 and the mounting hole 6, and the rotating portion 502 is rotationally matched with the cutter particle 2, and the abutting portion 503 located outside the cutter bar 1 is fixed to the cutter bar 1 through the fixing member 9, so that when the cutter bar 1 rotates around its own axis, the cutter particle 2 moves circumferentially around the axis of the cutter bar 1, and at the same time, the cutter particle 2 rotates around the axis of the fixing shaft 5, so that the cutter particle 2 completes stable knurling on the processing plane 111 of the fixed workpiece 11 located below the cutter particle 2 by using the processing teeth 4 located outside the mounting groove 3 under the action of two moving states, and a circular annular knurling structure shown as the plane teeth 112 of the workpiece 11 shown in fig. 1 is processed.

Referring to fig. 2, the fixing member 9 is a screw in threaded connection with the cutter bar 1, a threaded hole 13 is formed in the side surface of the cutter bar 1 along the direction perpendicular to the axis of the screw, when the screw is screwed into the threaded hole 13 of the cutter bar 1, the axis of the screw is perpendicular to the axis of the cutter bar 1, and the screw head of the screw abuts against one end of the wedge-shaped surface of the abutting portion 503 of the fixing shaft 5, so that the fixing shaft 5 is abutted and fixed by the screw.

Referring to fig. 1, in order to facilitate the force application of the working person to move the tool bar 1, a holding portion 10 with a polygonal cross section is integrally arranged on the outer circumferential surface of the tool bar 1, in the embodiment of the present application, the cross section of the holding portion 10 is quadrilateral, and each corner of the holding portion 10 is in arc transition arrangement, so that the working person is not easily scratched when the working person applies force to move the tool bar 1 through the holding portion 10, and the safety is high.

Referring to fig. 1 and 2, in order to enable the knife particle 2 to process the workpiece 11, the knife bar 1 is not easy to touch the workpiece 11, one end of the knife bar 1, which is provided with the mounting groove 3, is in a wedge shape, and one side of the knife bar 1, which is close to the first plane 201 of the knife particle 2, is a wedge-shaped surface. The groove wall of the mounting groove 3 between the two mounting surfaces 301 is set as a guide surface 302, and the guide surface 302 and the machining teeth 4 of the cutter particle 2 close to the guide surface 302 are arranged in parallel, so that the guide surface 302 of the mounting groove 3 plays a role in guiding the cutter particle 2 during mounting, and the cutter particle 2 is not prone to dislocation during mounting.

The implementation principle that the rotatory annular knurl cutter that can be used to machining center of blade of this application embodiment is: when the cutter particle 2 and the cutter bar 1 are installed, the cutter particle 2 is firstly arranged in the installation groove 3, then the fixing portion 501 of the fixing shaft 5 sequentially penetrates through the second fixing hole 8 and the installation hole 6 and is located in the first fixing hole 7 to tightly support the hole wall of the first fixing hole 7, and then a screw is screwed, so that the screw head of the screw tightly supports one end of the wedge-shaped surface of the abutting portion 503 to complete the installation of the cutter particle 2 and the cutter bar 1.

When a workpiece 11 is machined, the tool bar 1 is first mounted on a spindle of a milling machine so that the tool bar 1 is driven to rotate by the milling machine. Subsequently, the workpiece 11 to be knurled is fixed on a processing table of a milling machine, the end surface to be machined of the workpiece 11, namely a machining plane 111, is positioned below a knurling tool, when the cutter bar 1 is driven by the milling machine to rotate around the axis of the cutter bar 1, the cutter particles 2 move circumferentially around the axis of the cutter bar 1 and simultaneously rotate around the axis of the fixed shaft 5, namely the axis of the cutter bar, so that when the knurling tool feeds in the direction of the workpiece 11, the machining teeth 4 on the outer peripheral surface of the cutter particles 2 realize the knurling on the plane of the workpiece 11, namely the forming of the plane teeth 112, and the position of the workpiece 11 during the knurling is fixed, so that the workpiece which is difficult to be fixedly installed on a lathe chuck or the workpiece which generates a large centrifugal force during rotation can be stably machined.

Example 2.

Referring to fig. 3, the difference between the embodiment of the present application and the embodiment is that the fixing member 9 is a countersunk screw in threaded connection with the tool bar 1, and when the fixing portion 501 of the fixing shaft 5 is inserted into the mounting hole 6 of the cutting insert 2 and abuts against the tool bar 1, two ends of the fixing shaft 5 in the length direction are respectively flush with the openings of the first fixing hole 7 and the second fixing hole 8, so that the fixing shaft 5 can be better accommodated in the tool bar 1. The axial direction of countersunk head formula screw is perpendicular to the axial direction of cutter arbor 1, and when countersunk head formula screw thread was fixed in cutter arbor 1, the screw head of countersunk head screw supported tightly fixed axle 5 and kept away from the one end of fixed part 501 to make countersunk head formula screw support tightly fixedly to the position of fixed axle 5. The implementation principle of the embodiment of the present application is the same as that of embodiment 1, and therefore, the detailed description thereof is omitted. Compare embodiment 1, fixed axle 5 and mounting 9 that cutter arbor 1 in this application embodiment can be better are accomodate, are favorable to guaranteeing the surface planarization after sword grain 2 and the installation of cutter arbor 1.

Example 3.

Referring to fig. 4, the embodiment of the present application is different from the embodiment in that the angle α between the mounting surface 301 of the mounting groove 3 and the axis of the tool holder 1 is 30 °. The fixing shaft 5 is mounted on the cutter bar 1, namely a fixing part 501 of the fixing shaft 5 sequentially penetrates through the second fixing hole 8 and the mounting hole 6 along the central axis direction of the cutter grains 2 and is positioned in the first fixing hole 7 to be tightly abutted against the hole wall of the first fixing hole 7, and when the fixing part 9 is tightly abutted against the fixing shaft 5 to fix the position of the fixing shaft 5, the degree of an included angle beta between the axis of the fixing shaft 5, namely the central axis of the cutter grains 2 and the axis of the cutter bar 1 is 60 degrees, so that knurling processing of lines with large gradient on a workpiece conical surface or a workpiece plane is realized. The implementation principle of the embodiment of the present application is the same as that of embodiment 1, and therefore, the detailed description thereof is omitted.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a rotatory annular knurl cutter that can be used to machining center of blade, includes cutter arbor (1) and sword grain (2), its characterized in that: the cutter particle (2) is rotatably arranged at one end of the cutter rod (1), the cutter particle (2) is in a circular truncated cone shape, machining teeth (4) are arranged on the outer peripheral surface of the cutter particle (2), an included angle is formed between the central axis of the cutter particle (2) and the axis of the cutter rod (1), and the degree of the included angle is 0-90 degrees.

2. A knurling tool for a tool body rotation useful in a machining center as claimed in claim 1 wherein: wear to be equipped with fixed axle (5) in cutter arbor (1), mounting hole (6) that run through the setting along self axis direction are seted up in sword grain (2), mounting hole (6) of sword grain (2) are worn to locate in fixed axle (5) and with sword grain (2) normal running fit, fixed axle (5) are through mounting (9) and cutter arbor (1) fixed connection.

3. A knurling tool for a tool body rotation useful in a machining center as claimed in claim 2 wherein: the fixing piece (9) is a screw in threaded connection with the cutter bar (1), the screw abuts against one end of the fixing shaft (5), and one end, far away from the screw, of the fixing shaft (5) abuts against the cutter bar (1).

4. A knurling tool for a tool body rotation useful in a machining center as claimed in claim 3 wherein: the axial direction of the screw is vertical to the axial direction of the cutter bar (1).

5. A knurling tool for a tool body rotation useful in a machining center as claimed in claim 4 wherein: one end of the fixed shaft (5) facing the screw is wedge-shaped.

6. A knurling tool for a tool body rotation useful in a machining center as claimed in claim 2 wherein: one end, inserted into the mounting hole (6), of the fixing shaft (5) is in a circular truncated cone shape, and the cross sectional area of one end, close to the cutter particle (2), of the fixing shaft (5) is smaller than that of one end, far away from the cutter particle (2), of the fixing shaft (5).

7. A knurling tool for a tool body rotation useful in a machining center as claimed in claim 1 wherein: the included angle between the central axis of the cutter particle (2) and the axis of the cutter rod (1) is 30-60 degrees.

8. A knurling tool for a tool body rotation useful in a machining center as claimed in claim 1 wherein: the cutter bar is characterized in that one end of the cutter bar (1) is provided with an installation groove (3) which is obliquely arranged, the installation groove (3) extends to the side wall of the cutter bar (1) along the axis direction perpendicular to the cutter bar (1), and the cutter grains (2) are installed in the installation groove (3).

9. A knurling tool for a tool body rotation useful in a machining center as claimed in claim 8 wherein: one groove wall of the mounting groove (3) is parallel to one processing tooth (4) on the outer peripheral surface of the cutter particle (2).

10. A knurling tool for a tool body rotation useful in a machining center as claimed in claim 1 wherein: the cutter bar (1) is integrally provided with a holding part (10) with a polygonal cross section, and each edge of the holding part (10) is in arc transition arrangement.