Rotary broach holder

Abstract

The utility model relates to a broach holder, in particular to a rotary broach holder, which aims to solve the technical problems that the existing hanging type broach storage rack is long in broach changing period, the distance between broaches is too close, the broaches are easy to collide, the service life of the broaches is shortened, and the hidden danger of quality accidents is increased when parts are produced. The broach positioning device comprises a positioning plate, a base, a rotary connecting mechanism and a plurality of broach positioning sleeves, the plurality of broach positioning sleeves are arranged at the top of the positioning plate, and each broach positioning sleeve is used for storing one broach; the positioning plate is positioned above the base; the rotary connecting mechanism is connected between the positioning plate and the base, the upper end of the rotary connecting mechanism is connected with the positioning plate, the lower end of the rotary connecting mechanism is connected with the base, and the upper end and the lower end of the rotary connecting mechanism can rotate relatively.

Description

TECHNICAL FIELD

[0001] The utility model relates to a broach holder, concretely relates to a rotatable broach holder. BACKGROUND

[0002] The broach is the forming tool for the broaching process. There are several rows of teeth on its surface, and the depth of each row of teeth increases from the cutting-in end to the cutting-out end, and the size also increases and changes. It is commonly used in the production process of circular holes, keyways, spline holes, and flat surfaces. It is used frequently in the workshop. The structure of the broach is relatively uniform, although there are many types, but the difference is not big. The ordinary circular hole broach is composed of a handle, a neck, a transition cone, a front guide, a cutting tooth, a calibration tooth, a rear guide, and a rear support. Among them, the handle and the rear support play a clamping and supporting role, the neck and the rear guide play a connecting and supporting role, the transition cone and the front guide play a guiding role, and the cutting tooth and the calibration tooth play a rough and fine cutting and calibration role.

[0003] In the production process, the corresponding machining tool needs to be frequently replaced according to the change of product types on the production line. The time for manual replacement and adjustment of the tool can be shortened to a fixed length with the accumulation of workers' experience. The rapid preparation of materials, tools and tools before replacement is an important link to shorten the replacement cycle. However, the more complex the product types are, the more tools the machine tool needs to reserve, Figure 1 As shown in a structure diagram of an existing hanging broach storage rack, the hanging broach storage rack is provided with a plurality of hooks 02 on both sides of the top beam 01. In use, the broach storage rack is placed beside the machine tool, and the broach is vertically hung on the hooks 02 on both sides of the top beam 01 of the broach storage rack through the sleeve and the ring. When replacing the tool, the worker needs to go to the vicinity of the required broach to take it down from the hook 02, which consumes a lot of time. In addition, when the broach rack is subjected to a large external vibration, if the distance between the broaches is too close, the broaches are easy to collide, reducing the service life of the broach and increasing the risk of quality accidents in part production.

[0004] A Chinese invention patent with the application publication number CN104526431A discloses a double-layer disc type tool magazine device matched with a numerical control machine tool, which comprises a tool magazine base, a tool magazine support, a tool sleeve chuck, a tool disc base, a tool sleeve, and a tool setting instrument. The tool magazine base is connected and installed on the machine tool, the tool magazine support is connected to one end of the tool magazine base, and the tool disc base is connected to the support through bolts. The tool setting instrument is installed at the other end of the tool magazine base. Two tool sleeve chucks are placed on the tool disc base and are separated by a tool disc male sleeve. Two layers of tool sleeve chucks hold the tool sleeve seat chuck and are fixed by bolts. The tool disc compression ring is compressed on the upper layer of tool sleeve chucks.

[0005] The Chinese invention patent with the application publication number CN115555894A discloses an intelligent machining center, comprising a machine tool body, a machining table, a main shaft and a tool magazine, the tool magazine is internally provided with a rotatable tool changing mechanism and a tool disc on the same axis, and the outer edge of the tool disc is fixed with a plurality of tool clamping mechanisms, the distance between the closest tool clamping mechanism to the tool changing mechanism and the tool changing mechanism is equal to the distance between the main shaft and the tool changing mechanism; the tool changing mechanism comprises a sleeve, an electric push rod for driving the sleeve to stretch and retract, a tool holder for disassembling and assembling tools, and a driving motor for driving the sleeve to rotate and change tools, a connecting rod is connected between the sleeve and the tool holder, and the tool holder is centrally symmetrical about the axis of the sleeve.

[0006] However, the tool magazines disclosed in the above two patents are both dedicated to numerical control machine tools, and the technical problems of long tool changing period, too close distance between the draw knives, easy collision between the draw knives, reduced service life of the draw knives and increased hidden dangers of quality accidents during part production still exist in the manual tool changing by workers. Practical new type content

[0007] The utility model aims at solving the technical problems of long tool changing period, too close distance between the draw knives, easy collision between the draw knives, reduced service life of the draw knives and increased hidden dangers of quality accidents during part production existing in the existing hanging draw knife storage rack, and provides a rotary draw knife rack.

[0008] To achieve the above-mentioned purpose, the technical scheme adopted by the utility model is:

[0009] A rotary draw knife rack, which is characterized in that:

[0010] The rotary draw knife rack comprises a positioning plate, a base, a rotary connecting mechanism and a plurality of draw knife positioning sleeves.

[0011] The plurality of draw knife positioning sleeves are arranged on the top of the positioning plate, and each draw knife positioning sleeve is used for storing one draw knife.

[0012] The positioning plate is located above the base.

[0013] The rotary connecting mechanism is connected between the positioning plate and the base, the upper end of the rotary connecting mechanism is connected with the positioning plate, the lower end of the rotary connecting mechanism is connected with the base, and the upper end and the lower end of the rotary connecting mechanism can rotate relative to each other.

[0014] Further, the rotary connecting mechanism comprises an upper bearing seat, a lower bearing seat, a first bearing, a second bearing and a connecting shaft.

[0015] The upper end of the upper bearing seat is fixedly connected with the positioning plate, and the lower end of the lower bearing seat is fixedly connected with the base; the upper end of the upper bearing seat is the upper end of the rotary connecting mechanism, and the lower end of the lower bearing seat is the lower end of the rotary connecting mechanism.

[0016] The outer ring of the first bearing is mounted in the counterbore at the lower end of the upper bearing seat, and the inner ring of the first bearing is mounted on the upper end of the connecting shaft;

[0017] The outer ring of the second bearing is mounted in the counterbore at the upper end of the lower bearing seat, and the inner ring of the second bearing is mounted on the lower end of the connecting shaft.

[0018] Further, the upper end of the upper bearing seat is fixedly connected with the positioning plate through bolts, and the lower end of the lower bearing seat is fixedly connected with the base through bolts.

[0019] Further, the top of the positioning plate is provided with at least one ring of broach positioning sleeves in the circumferential direction; each ring of broach positioning sleeves comprises a plurality of broach positioning sleeves.

[0020] Further, the plurality of broach positioning sleeves in the same ring are arranged around the rotation axis of the positioning plate.

[0021] The plurality of broach positioning sleeves have different inner diameters and heights, and are used for storing broaches of different specifications.

[0022] Further, the broach positioning sleeve has a tubular portion and a boss portion connected below the tubular portion, the tubular portion is used for restraining the broach, and the boss portion is fixedly connected to the positioning plate through bolts and nuts.

[0023] Further, a lifting lug is arranged in the middle of the top of the positioning plate, and the lifting lug is used for hoisting the rotary broach holder.

[0024] Further, the positioning plate is in the form of a circular plate, the diameter of the positioning plate is 700 mm, the thickness of the positioning plate is 40 mm, and the material of the positioning plate is 45 steel with a hardness of 30.

[0025] The base is in the form of a circular plate, the diameter of the base is 800 mm, the thickness of the base is 40 mm, and the material of the base is 45 steel with a hardness of 30.

[0026] Further, a plurality of footstocks are mounted on the bottom of the base, and the height of the footstock is adjustable.

[0027] Further, a plurality of first threaded holes corresponding to the plurality of footstocks are arranged on the base, and the threaded rod at the top of each footstock is in threaded connection with the corresponding first threaded hole.

[0028] A plurality of positioning holes corresponding to the plurality of broach positioning sleeves are arranged on the positioning plate, a positioning block portion is arranged at the bottom of each broach positioning sleeve, and the positioning block portion is mounted in the positioning hole.

[0029] Compared with the prior art, the beneficial effects of the utility model are:

[0030] 1. This rotary broach holder, compared with the traditional hanging broach storage rack, can significantly reduce the distance for employees to pick up broaches by setting the positioning plate as a circular plate, arranging multiple broach positioning sleeves evenly around the rotation axis of the positioning plate, and setting a rotary connection mechanism. As a result, the tool change speed can be increased, and the lean production during production change can be improved.

[0031] 2. Compared with the traditional hanging broach storage rack, this rotary broach holder uses broach positioning sleeves to store broaches. The broach is restricted by gravity and the surrounding of the broach positioning sleeve, with a small range of movement and is not prone to bumping.

[0032] 3. This rotary broach holder has a small and light unloaded shape. Compared with the traditional hanging broach storage rack, it has a compact structure and a light weight. With the cooperation of lifting lugs, employees can easily adjust the position of the broach holder, and the handling intensity of employees can be reduced when the production line layout changes.

[0033] 4. This rotary broach holder has a more streamlined structure and a smaller floor area compared with the traditional hanging broach storage rack, saving the floor space in the workshop and being more suitable for the complex wiring situation of the production line, especially suitable for slender broaches with a light weight.

[0034] 5. This rotary broach holder has a simple and reliable structure. The fully bolted connection method facilitates the replacement and repair of parts. The positioning plate and the base are made of thick materials, with strong anti-impact ability and are not easily damaged or deformed, meeting the usage requirements of production. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 FIG. is a schematic structural diagram of an existing hanging broach storage rack, where (a) is the front view, (b) is the top view, and (c) is the left view;

[0036] <​​​​​​​​​​​​​​​​​

[0041] In order to make the purpose, advantages and characteristics of the utility model more clear, the following will make further detailed description of the utility model of a rotary broach holder combining with the drawings and specific embodiments.

[0042] In the description of the utility model, it should be pointed out that, unless there is explicit provision and limitation, the terms "mounting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected, it can be directly connected, or indirectly connected through intermediate medium. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to specific circumstances.

[0043] In the description of the utility model, it should be pointed out that the terms "first", "second", "third", "fourth" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0044] As shown in Figure 2 And Figure 3 The utility model discloses a rotary broach holder, including positioning plate 2, base 3, rotary connection mechanism 6, lug 4, 10 broach positioning sleeve 1 and 4 anchor 5.

[0045] Positioning plate 2 and base 3 are all round plate, the diameter of positioning plate 2 is 700mm, the thickness of positioning plate 2 is 40mm, the diameter of base 3 is 800mm, the thickness of base 3 is 40mm, the material of positioning plate 2 and base 3 is all 45 steel of 30 hardness, positioning plate 2 is located above base 3, and positioning plate 2 and base 3 are parallelly arranged.

[0046] Rotary connection mechanism 6 is connected between positioning plate 2 and base 3, the upper end of rotary connection mechanism 6 is connected positioning plate 2, the lower end of rotary connection mechanism 6 is connected base 3, and the upper end and the lower end of rotary connection mechanism 6 can rotate relative to each other. Specifically, rotary connection mechanism 6 includes upper bearing seat 61, lower bearing seat 62, first bearing 63, second bearing 64 and connecting shaft 65.

[0047] 12 first circular holes 23 with the diameter of 11mm are uniformly arranged on positioning plate 2 around the central axis of positioning plate 2, the distance between the central axis of first circular hole 23 and the central axis of positioning plate 2 is 125mm, the upper end of upper bearing seat 61 is the upper end of rotary connection mechanism 6, 12 second threaded holes 611 with the size specification of M10 are arranged on the boss of the upper end of upper bearing seat 61, 12 second threaded holes 611 are one-to-one corresponding with 12 first circular holes 23, 12 bolts with the size specification of M10*60 are respectively screwed with 12 second threaded holes 611 after respectively passing through 12 first circular holes 23, so as to fixedly connect the upper end of upper bearing seat 61 with positioning plate 2.

[0048] 12 third threaded holes 32 with M10 size are evenly arranged on the base 3 around the central axis of the base 3, the distance between the central axis of the third threaded hole 32 and the central axis of the base 3 is 125mm, the lower end of the lower bearing seat 62 is the lower end of the rotary connection mechanism 6, 12 through holes 621 with a diameter of 11mm are arranged on the boss of the lower end of the lower bearing seat 62, the 12 through holes 621 correspond to the 12 third threaded holes 32, and 12 bolts with M10*60 size are respectively screwed into the 12 through holes 621 and the 12 third threaded holes 32, so as to fixedly connect the lower end of the lower bearing seat 62 with the base 3.

[0049] The first bearing 63 and the second bearing 64 are both ball bearings, the outer ring of the first bearing 63 is installed in the counterbore at the lower end of the upper bearing seat 61, the inner ring of the first bearing 63 is installed on the upper end of the connecting shaft 65, the outer ring of the second bearing 64 is installed in the counterbore at the upper end of the lower bearing seat 62, and the inner ring of the second bearing 64 is installed on the lower end of the connecting shaft 65. The lower end surface of the upper bearing seat 61 is in contact with the upper end surface of the lower bearing seat 62, and lubricating oil is arranged between the lower end surface of the upper bearing seat 61 and the upper end surface of the lower bearing seat 62. The central axis of the connecting shaft 65, the central axis of the positioning plate 2 and the central axis of the base 3 are coaxially arranged. The rotation of the upper bearing seat 61 relative to the lower bearing seat 62 is realized through the connection of the first bearing 63 and the second bearing 64, the rotation function of the positioning plate 2 can be realized, and then the worker can rotate the required broach in front of him by rotating the positioning plate 2, which greatly reduces the distance of the worker to take the broach, improves the speed of changing the tool, and improves the lean production.

[0050] 10 broach positioning sleeves 1 are arranged on the top of the positioning plate 2, each broach positioning sleeve 1 is used to store a broach, the broach positioning sleeve 1 comprises a tubular part 11, a boss part 12 and a positioning block part 13 connected in sequence from top to bottom, the tubular part 11 is in the shape of a circular tube, the outer diameter of the tubular part 11 is 70mm, the inner diameter of the tubular part 11 is 40.5mm, and the height of the tubular part 11 is 150mm, the tubular part 11 is used to constrain the broach, the boss part 12 is in the shape of a circular plate, the diameter of the boss part 12 is 120mm, and the height of the boss part 12 is 20mm, the positioning block part 13 is in the shape of a cylinder, the diameter of the positioning block part 13 is 50mm, and the height of the positioning block part 13 is 40mm, and the material of the broach positioning sleeve 1 is 45 steel. The broach is stored in the broach positioning sleeve 1, and the broach is constrained around the tubular part 11 by gravity, and the range of movement is small, and it is not easy to collide.

[0051] The 10 positioning holes 21 are evenly arranged on the positioning plate 2 around the central axis of the positioning plate 2, the distance between the central axis of the positioning hole 21 and the central axis of the positioning plate 2 is 275 mm, the cross section perpendicular to the axis of the positioning hole 21 is circular, the positioning block part 13 at the bottom of the broach positioning sleeve 1 is assembled in the positioning hole 21, and the positioning of the broach positioning sleeve 1 is realized through the cooperation of the positioning block part 13 and the positioning hole 21; four second circular holes with a diameter of 11 mm are evenly arranged around each positioning hole 21 on the positioning plate 2, the distance between the central axis of the second circular hole and the central axis of the corresponding positioning hole 21 is 50 mm, which is used for fixing the broach positioning sleeve 1, and four third circular holes with a diameter of 11 mm are evenly distributed around the central axis of the boss part 12, the distance between the central axis of the third circular hole and the central axis of the boss part 12 is 50 mm, and four bolts with a size specification of M10*80 are connected with four nuts with a size specification of M10 after passing through the four third circular holes and the four second circular holes respectively, so as to fixedly connect the boss part 12 and the positioning plate 2.

[0052] In other embodiments, the number of broach positioning sleeves 1 can also be set according to actual needs, for example, it can also be set to 6, 8, 12, 13, 15, etc. In other embodiments, multiple broach positioning sleeves 1 can also be arranged on the top of the positioning plate 2, and the multiple broach positioning sleeves 1 in the same circle are evenly arranged around the central axis of the positioning plate 2.

[0053] In other embodiments, the inner diameters of the multiple broach positioning sleeves 1 can also be different to realize the compatibility of different diameter shank handles, for example: the inner diameters of the tubular parts 11 of the five broach positioning sleeves 1 are 40.5 mm, and the inner diameters of the tubular parts 11 of the five broach positioning sleeves 1 are 30 mm; for another example, the inner diameters of the tubular parts 11 of the four broach positioning sleeves 1 are 40.5 mm, the inner diameters of the tubular parts 11 of the three broach positioning sleeves 1 are 35 mm, and the inner diameters of the tubular parts 11 of the three broach positioning sleeves 1 are 45 mm, etc.

[0054] In other embodiments, the heights of the multiple broach positioning sleeves 1 can also be different to realize the compatibility of different length shank handles, for example: the heights of the tubular parts 11 of the six broach positioning sleeves 1 are 150 mm, and the heights of the tubular parts 11 of the four broach positioning sleeves 1 are 100 mm; for another example, the heights of the tubular parts 11 of the five broach positioning sleeves 1 are 150 mm, the heights of the tubular parts 11 of the two broach positioning sleeves 1 are 110 mm, and the heights of the tubular parts 11 of the three broach positioning sleeves 1 are 180 mm, etc.

[0055] The middle of the top of the positioning plate 2 is provided with a fourth threaded hole 22 with a size of M30, the middle axis of the fourth threaded hole 22 coincides with the middle axis of the positioning plate 2, and the lifting lug 4 is installed on the fourth threaded hole 22, the lifting lug 4 is used for hoisting the rotary broach holder, facilitating employees to adjust the position of the broach holder, and reducing the carrying strength of employees when the production line layout is changed.

[0056] The bottom of the base 3 is provided with four foot bolts 5, the base 3 is kept at a certain height from the ground through the four foot bolts 5, and the height of the foot bolt 5 is adjustable. Specifically, four first threaded holes 31 with a size of M40 are uniformly arranged on the base 3 around the middle axis of the base 3, the distance between the middle axis of the first threaded hole 31 and the middle axis of the base 3 is 350mm, the threaded rods at the top of the four foot bolts 5 are respectively screwed with the four first threaded holes 31, the height adjustment of the base 3 can be realized by simultaneously rotating the four foot bolts 5, and then the height adjustment of the broach positioning sleeve 1 can be realized, and the adjustable range is 0mm-40mm.

[0057] Compared with the traditional hanging broach storage rack, the rotary broach holder has a more simplified structure, a smaller floor area, saves workshop floor space, is more suitable for complex wiring of the production line, and is especially suitable for light and long broaches. The rotary broach holder has a simple and reliable structure, the full bolt connection mode facilitates part replacement and maintenance, the positioning plate and the base are thick and strong, have strong impact resistance and are not easy to be damaged and deformed, and meet the use requirements of production.

[0058] Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still modify the specific technical solutions recorded in the foregoing examples, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the present application.

Claims

1. A rotary broach holder, characterized in that: comprising a positioning plate (2), a base (3), a rotary connecting mechanism (6) and a plurality of broach positioning sleeves (1); the plurality of broach positioning sleeves (1) are arranged on the top of the positioning plate (2), and each of the broach positioning sleeves (1) is used for storing a broach; the positioning plate (2) is located above the base (3); the rotary connecting mechanism (6) is connected between the positioning plate (2) and the base (3), the upper end of the rotary connecting mechanism (6) is connected with the positioning plate (2), the lower end of the rotary connecting mechanism (6) is connected with the base (3), and the upper end and the lower end of the rotary connecting mechanism (6) can rotate relative to each other.

2. The rotary broach holder according to claim 1, characterized in that: the rotary connecting mechanism (6) comprises an upper bearing seat (61), a lower bearing seat (62), a first bearing (63), a second bearing (64) and a connecting shaft (65); the upper end of the upper bearing seat (61) is fixedly connected with the positioning plate (2), the lower end of the lower bearing seat (62) is fixedly connected with the base (3); the upper end of the upper bearing seat (61) is the upper end of the rotary connecting mechanism (6), and the lower end of the lower bearing seat (62) is the lower end of the rotary connecting mechanism (6); the outer ring of the first bearing (63) is installed in the counterbore at the lower end of the upper bearing seat (61), and the inner ring of the first bearing (63) is installed on the upper end of the connecting shaft (65); the outer ring of the second bearing (64) is installed in the counterbore at the upper end of the lower bearing seat (62), and the inner ring of the second bearing (64) is installed on the lower end of the connecting shaft (65).

3. The rotary broach holder according to claim 2, characterized in that: the upper end of the upper bearing seat (61) is fixedly connected with the positioning plate (2) through bolts, and the lower end of the lower bearing seat (62) is fixedly connected with the base (3) through bolts.

4. The rotary broach holder according to claim 1 or 2, characterized in that: at least one circle of the broach positioning sleeves (1) is arranged on the top of the positioning plate (2) in a circumferential direction; each circle of the broach positioning sleeves (1) comprises a plurality of the broach positioning sleeves (1).

5. The rotary broach holder according to claim 4, characterized in that: the plurality of broach positioning sleeves (1) in the same circle are arranged around the rotation axis of the positioning plate (2) in a uniform manner; the inner diameters and heights of the plurality of broach positioning sleeves (1) are different, and the plurality of broach positioning sleeves (1) are used for storing broaches of different specifications.

6. The rotary broach holder according to claim 5, characterized in that: the broach positioning sleeve (1) has a tubular portion (11) and a boss portion (12) connected below the tubular portion (11), the tubular portion (11) is used for restraining a broach, and the boss portion (12) is fixedly connected to the positioning plate (2) through bolts and nuts.

7. The rotary broach holder according to claim 4, characterized in that: a lifting lug (4) is arranged in the middle of the top of the positioning plate (2), and the lifting lug (4) is used for hoisting the rotary broach holder. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 8. The rotary broach holder according to claim 4, characterized in that: the positioning plate (2) is in the shape of a circular plate, the diameter of the positioning plate (2) is 700 mm, the thickness of the positioning plate (2) is 40 mm, and the material of the positioning plate (2) is 45 steel with a hardness of 30; the base (3) is in the shape of a circular plate, the diameter of the base (3) is 800 mm, the thickness of the base (3) is 40 mm, and the material of the base (3) is 45 steel with a hardness of 30.

9. The rotary broach holder according to claim 1, characterized in that: a plurality of ground feet (5) are installed on the bottom of the base (3), and the height of the ground feet (5) is adjustable.

10. The rotary broach holder according to claim 1, characterized in that: a plurality of first threaded holes (31) corresponding to the plurality of ground feet (5) are arranged on the base (3), the screw rod on the top of each ground foot (5) is in threaded connection with the corresponding first threaded hole (31); a plurality of positioning holes (21) corresponding to the plurality of broach positioning sleeves (1) are arranged on the positioning plate (2), and a positioning block (13) is arranged on the bottom of each broach positioning sleeve (1), the positioning block (13) is installed in the positioning hole (21).

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