CN115870551A - Special cutter and special broaching machine for making rotating rod - Google Patents
Special cutter and special broaching machine for making rotating rod Download PDFInfo
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- CN115870551A CN115870551A CN202211407790.6A CN202211407790A CN115870551A CN 115870551 A CN115870551 A CN 115870551A CN 202211407790 A CN202211407790 A CN 202211407790A CN 115870551 A CN115870551 A CN 115870551A
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- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000003754 machining Methods 0.000 abstract description 8
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Abstract
The invention relates to a special cutter for a brake lever and a special broaching machine for the brake lever. The special cutter for the rotation making rod comprises a cutter holder and a plurality of broaches. The tool apron is provided with a top end and a bottom end which are opposite. The tool apron is provided with a tool mounting groove along the direction of the bottom end pointing to the top end. The inner wall of the cutter mounting groove is provided with a plurality of cutter mounting positions. The plurality of broaches respectively correspond to the plurality of cutter mounting positions one by one. Each broach is mounted on the corresponding tool mounting position along the direction from the bottom end to the top end, and the teeth of the broach deviate from the tool mounting position. The broaching parts which can be matched with a plurality of surfaces to be machined of workpieces to be machined are formed by the surrounding of the cutter teeth of the plurality of broaches. The special tool for the rotary rod is arranged, so that the broaching machine special for the rotary rod can complete broaching of all surfaces on the rotary rod in one machining cycle, the surfaces in different directions on the rotary rod can be subjected to broaching forming at one time, and the machining efficiency of the rotary rod is greatly improved.
Description
Technical Field
The invention relates to the technical field of broaching machines, in particular to a special tool for a brake lever and a special broaching machine for the brake lever.
Background
The brake rotating rod is used as a rotating part and widely applied to positions of vehicle door locks, vehicle brakes and the like, and the requirement on product quality is high. In order to obtain higher dimensional accuracy and smaller machining accuracy, a broaching machine can be adopted to perform broaching on the surface of the pawl, which has higher machining requirement. However, each of the pawl bars has a plurality of surfaces to be machined, which need to be broached, and the plurality of surfaces to be machined have different orientations, which makes broaching difficult. The traditional method is that each surface is broached, a workpiece to be machined needs to be clamped and positioned on a workbench of a broaching machine again, and therefore the machining of each workpiece needs to be repeatedly clamped and positioned and broached for multiple times, and the broaching efficiency of the rotary rod is greatly influenced.
Disclosure of Invention
Accordingly, there is a need for a special tool for a pawl and a special broaching machine for a pawl that can improve the broaching efficiency of the pawl.
A special cutter for a pawl, which is used for being arranged on a special broaching machine for the pawl to perform broaching on a plurality of surfaces to be machined of the pawl, the special cutter for the pawl comprises:
the tool apron is provided with a top end and a bottom end which are opposite; the tool apron is provided with a tool mounting groove along the direction from the bottom end to the top end; the inner wall of the cutter mounting groove is provided with a plurality of cutter mounting positions;
the broaching tools correspond to the cutter mounting positions one by one respectively; each broach is mounted on the corresponding cutter mounting position along the direction from the bottom end to the top end, and the cutter teeth of the broach deviate from the cutter mounting position;
and the broaching parts which can be matched with a plurality of surfaces to be machined of the workpieces to be machined to be broached are formed by surrounding the cutter teeth of the broaches.
In some of these embodiments, an orthographic projection of at least two of the plurality of broaches in a plane parallel to the direction of extension of the tool-mount channel at least partially overlaps.
In some of these embodiments, at least two of the plurality of broaches are staggered circumferentially of the tool-mount channel.
In some of these embodiments, at least two of the plurality of broaches are aligned or partially misaligned in the direction of extension of the tool-mount channel.
In some embodiments, the height of the teeth on each broach gradually increases in a direction from the bottom end toward the top end.
In some embodiments, at least two of the plurality of broaches have different lengths in the lengthwise direction.
In some embodiments, the tool holder comprises a mounting base plate and a tool mounting portion, wherein the tool mounting portion is arranged on the mounting base plate so that the cross section of the tool holder is T-shaped; a plurality of mounting point positions used for being connected with the lathe bed of the special broaching machine for the braking rod are formed on the mounting bottom plate; the plurality of mounting point positions are divided into two groups and are respectively positioned on two sides of the cutter mounting part; the cutter installation part deviates from one side of the installation bottom plate is formed with the cutter installation groove.
In some embodiments, the tool mounting groove comprises a plurality of mounting grooves which are communicated in sequence along the circumferential direction; the bottom of each mounting groove is provided with at least one tool mounting position; the depth of at least two of the mounting grooves is different.
A special broaching machine for a pawl comprises a machine body, the special tool for the pawl, a workbench, a positioning clamp and a broaching driving piece;
the special cutter for the braking rod is arranged on the lathe bed; the workbench is slidably arranged on the bed body; the positioning clamp is arranged on the workbench; the broaching driving piece is in transmission connection with the workbench and is used for driving the workbench to drive the workpiece to be machined on the positioning clamp to move in the broaching part along the direction of the bottom end pointing to the top end so as to carry out broaching on a plurality of surfaces to be machined of the workpiece to be machined.
In some embodiments, the special cutter for the pawl is multiple; the special cutters for the rotation making rods are arranged at intervals along the circumferential direction of the workbench, and each cutter mounting groove faces the workbench; and the positioning clamp is arranged at the position of the workbench corresponding to each special cutter for the braking rod.
The special tool for the rotation rod and the special broaching machine for the rotation rod are characterized in that the special tool for the rotation rod is arranged on a machine body to form the special broaching machine for the rotation rod, and when the special broaching machine for the rotation rod is positioned on a horizontal plane, the top end and the bottom end are respectively the upper end and the lower end of the tool apron. When the broaching of the rotating rod needs to be carried out by utilizing the special broaching machine for the rotating rod, the broaching driving piece drives the workbench to drive the workpiece to be machined to move in the broaching part from bottom to top, at the moment, the broaches are matched with each other to carry out broaching on a plurality of surfaces to be machined of the workpiece to be machined, and one-time broaching forming of the plurality of surfaces on the rotating rod is realized.
Drawings
Various additional advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the application. Moreover, like reference numerals are used to refer to like elements throughout. In the drawings:
FIG. 1 is a schematic view of a tool dedicated for making a rotary rod according to a preferred embodiment of the present invention;
FIG. 2 is a top view of the special rotary stem cutter of FIG. 1;
FIG. 3 is a top view of the tool holder of the special tool for making rotary rods shown in FIG. 1;
FIG. 4 is a top view of a positioning fixture mounted to a table in accordance with an embodiment of the present invention;
FIG. 5 is a front view of the positioning jig shown in FIG. 4 in an installed state with respect to a table;
fig. 6 is a schematic structural diagram of a workpiece to be processed according to an embodiment of the invention.
The reference numerals in the detailed description illustrate: 100. manufacturing a special cutter for the rotating rod; 110. a tool apron; 111. a top end; 112. a bottom end; 113. a cutter mounting groove; 1131. installing a groove; 114. mounting a bottom plate; 1141. mounting points; 115. a tool mounting portion; 120. broaching; 130. a broaching portion; 200. a work table; 300. positioning a clamp; 400. a workpiece to be processed; 410. and (5) processing the noodles.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully hereinafter with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
When an element is referred to as being "on" another element, it can be directly on the other element or intervening elements may also be present, unless otherwise specified. It will also be understood that when an element is referred to as being "between" two elements, it can be the only one between the two elements, or one or more intervening elements may also be present.
Where the terms "comprising," "having," and "including" are used herein, another component can be added unless an explicit limitation is used, such as "only," "consisting of … …," and the like. Unless mentioned to the contrary, terms in the singular may include the plural and are not to be construed as being one in number.
Furthermore, the drawings are not 1:1, and the relative sizes of the various elements in the drawings are drawn for illustration only and not necessarily to true scale.
FIG. 1 shows the structure of a special tool for making a rotating rod in one embodiment of the invention; FIG. 4 illustrates an installation state between the positioning jig and the table in an embodiment of the present invention;
referring to fig. 1 and 4, the present invention provides a tool 100 and a broaching machine (not shown) for making rotation rod. The special broaching machine for the pawl comprises a machine body (not shown), a special tool 100 for the pawl, a workbench 200, a positioning clamp 300 and a broaching driving piece.
The cutter 100 dedicated to the pawl is mounted on the bed. The table 200 is slidably mounted on the bed. The positioning jig 300 is mounted on the table 200. The broaching driving piece is in transmission connection with the workbench 200 and is used for driving the workbench 200 to drive the workpiece 400 to be machined on the positioning fixture 300 to move from bottom to top so as to match with the special tool 100 for the turning rod to carry out broaching on the surface 410 to be machined of the workpiece 400 to be machined.
As shown in fig. 6, a workpiece to be machined 400 for machining a pawl includes a plurality of surfaces to be machined 410 having different directions. The shapes of the surfaces 410 to be processed may be the same or different, and are determined according to the structural profile of the pawl. Therefore, the surface 410 to be processed may be an arc surface protruding outward or inward, may also be a plane, may also be a folded surface formed by sequentially connecting a plurality of planes, and may further be a special-shaped surface formed by connecting an arc surface and a plane. Fig. 2 is merely an example of the workpiece 400 to be processed, and the structure of the turning bar that can be processed by the turning bar-dedicated broaching machine is not limited, and in other embodiments of the present invention, the workpiece 400 to be processed may have other shapes as long as the workpiece 400 to be processed has a plurality of surfaces 410 to be processed with different directions.
Referring to fig. 4 and 5, in particular, there are a plurality of special tools 100 for making the rotating rod. The special tools 100 for the pawl are provided at intervals in the circumferential direction of the table 200. A positioning jig 300 is mounted on the table 200 at a position opposite to each of the pawl-dedicated cutters 100. In this case, only one positioning jig 300 may be attached to the table 200 at a position facing each of the special tools 100 for a turning bar, or a plurality of positioning jigs 300 may be stacked in the broaching direction. Therefore, one processing cycle of the special broaching machine for the braking rotating rods can realize broaching of a plurality of braking rotating rods simultaneously, and the broaching efficiency is improved when the braking rotating rods are processed in batches.
More specifically, the special tools 100 for the plurality of turning bars are divided into two groups, and the two groups are respectively arranged on the left side and the right side of the workbench 200, so that the workbench 200 can be conveniently mounted on the lathe bed, and the broaching stability can be improved. At this time, the positioning jigs 300 are also divided into two groups, and are respectively mounted on the left and right ends of the table 200.
Referring to fig. 1 again, the tool 100 for making rotation rod according to the preferred embodiment of the present invention is used to be installed on a broaching machine for making rotation rod for broaching a plurality of surfaces 410 to be machined in different directions on the rotation rod. The tool 100 for making a rotating rod includes a holder 110 and a plurality of broaches 120.
Referring to fig. 2 and 3, the tool holder 110 has a top end 111 and a bottom end 112 opposite to each other. The tool holder 110 has a tool mounting groove 113 formed along a direction from the bottom end 112 to the top end 111. The inner wall of the tool mounting pocket 113 has a plurality of tool mounting locations (not shown). In the tie bar-dedicated broaching machine, the tool holder 110 is attached to the machine body to realize the attachment of the tie bar-dedicated tool 100 to the tie bar-dedicated broaching machine. When the special broaching machine for the rotation bar is located on the horizontal plane, the top end 111 and the bottom end 112 are the upper end and the lower end of the tool holder 110, respectively, so that the tool mounting groove 113 extends in the vertical direction.
The plurality of broaches 120 correspond to the plurality of tool mounting positions one to one, respectively. Each broach 120 is mounted on a corresponding tool mounting location in a direction in which the bottom end 112 points toward the top end 111, and the teeth of the broach 120 face away from the tool mounting location. The teeth of the plurality of broaches 120 are surrounded to form a broaching portion 130 capable of performing broaching of a plurality of surfaces 410 to be machined of the workpiece 400 to be machined.
When the broaching machine special for the pawl is positioned on a horizontal plane, the broaching tools 120 are vertically installed on the corresponding tool installation positions, the broaching parts 130 through which the workpiece 400 to be machined can pass are formed by surrounding the teeth of the broaching tools 120, and the broaching tools 120 are mutually matched in the process that the workpiece 400 to be machined passes through the broaching parts 130, so that broaching machining of the surfaces 410 to be machined is realized.
When the broaching of the pawl is required to be performed by using the special broaching machine for the pawl, the broaching driving member drives the worktable 200 to drive the workpiece 400 to be processed to move in the broaching part 130 from bottom to top, and at the moment, the broaching tools 120 are mutually matched to perform broaching on a plurality of surfaces 410 to be processed of the workpiece 400 to be processed, so that one-time broaching forming of a plurality of surfaces on the pawl is realized.
Referring again to fig. 1, in some embodiments, orthographic projections of at least two of the plurality of broaches 120 in a plane parallel to the direction of extension of the tool-mount channel 113 at least partially overlap. When the special broaching machine for the pawl is positioned on the horizontal plane, the tool mounting slot 113 extends in the vertical direction, so that orthographic projections of at least two of the broaches 120 in the vertical plane are at least partially overlapped, thereby not only reducing the mounting heights of the broaches 120 in the tool mounting slot 113 and facilitating the reduction of the height of the special broaching machine for the pawl 100, but also simultaneously realizing broaching of at least two surfaces 410 to be machined when the workpiece 400 to be machined passes through the broaching part 130, and further improving the machining efficiency of the pawl.
In some embodiments, at least two of the plurality of broaches 120 are staggered along the circumference of the tool-mount channel 113. Thus, orthographic projections of at least two of the broaches 120 in a plane parallel to the extending direction of the tool mounting groove 113 do not intersect and are completely staggered, so that the heights of the positions of at least two of the broaches 120 in the tool mounting groove 113 are different, when the workpiece 400 to be machined passes through the broaching part 130, the broached work of the next broacher 120 is started after the broaching of the previous broacher 120 according to the sequence, the problem of insufficient power caused by the fact that the broached workpiece 400 is simultaneously broached by the multiple broaches 120 can be avoided, the reliability of the special broacher for the pawl is improved while the broaching precision is ensured.
Further, in some embodiments, at least two broaches 120 of the plurality of broaches 120 are aligned or partially misaligned in the direction of extension of the tool-mount channel 113. In this way, during the process of the workpiece 400 to be machined passing through the broaching portion 130, the whole or part of the same surface 410 to be machined can be broached at least twice, so as to obtain a precise and complete broaching surface of the turning bar.
Of course, in other embodiments, the plurality of broaches 120 disposed in a staggered manner in the circumferential direction of the tool mounting groove 113 may also be completely staggered in the extending direction of the tool mounting groove 113, so as to respectively perform broaching on the plurality of surfaces to be machined 410 in different directions in sequence.
In some embodiments, the tooth height on each broach 120 increases progressively in a direction from bottom end 112 toward top end 111. The tooth height is a height dimension of the tooth of the broach 120 in the depth direction of the tooth groove. The height of the teeth of each broach 120 is gradually increased from bottom to top, so that metal on the corresponding surface 410 to be machined can be cut off layer by layer when each workpiece 400 to be machined is subjected to broaching, and the broaching precision of the broaching surface can be ensured.
Referring again to fig. 1, further, in some embodiments, at least two of the plurality of broaches 120 have different lengths in the longitudinal direction. In this way, the lengths of the plurality of broaches 120 may be determined according to the broaching allowance corresponding to the surface 410 to be machined, so that the height of the broaching machine dedicated for the pawl can be reduced while obtaining a complete and accurate broaching surface of the pawl.
Referring to fig. 1 to 3, in some embodiments, the tool holder 110 includes a mounting base plate 114 and a tool mounting portion 115. The tool mounting portion 115 is provided on the mounting base plate 114 so that the tool holder 110 has a T-shaped cross section. The mounting plate 114 defines a plurality of mounting locations 1141 for connection to the bed of the tie bar-only broaching machine. The plurality of mounting locations 1141 are divided into two groups, one on each side of the tool mounting portion 115. A tool mounting portion 113 is formed on a side of the tool mounting portion 115 facing away from the mounting base plate 114. It should be noted that each group of mounting points 1141 may have only one mounting point 1141, or may have a plurality of mounting points 1141.
In this way, the mounting point 1141 is connected to the bed, so as to mount the tool apron 110 on the bed. And a plurality of mounting points 1141 are divided into two groups and respectively arranged on two sides of the tool mounting part 115, so that the connection stability of the tool apron 110 on the lathe bed is improved, the operation of the special broaching machine for the braking rod is ensured to be stable, and the broaching precision is improved. Meanwhile, the cross section of the tool apron 110 is set to be T-shaped, so that the tool apron 110 can be conveniently mounted on the lathe bed, the worktable 200 can conveniently drive the workpiece 400 to be machined to pass through the broaching part 130 from bottom to top, and the broaching work of the workpiece 400 to be machined is realized.
Referring again to FIG. 3, in some embodiments, the tool-mounting pocket 113 includes a plurality of mounting grooves 1131 that are circumferentially in series. The bottom of each mounting groove 1131 has at least one tool mounting location. The depths of at least two of the mounting grooves 1131 are different.
Wherein, the depth of the mounting groove 1131 refers to the depth dimension of the mounting groove 1131 in the opening direction of the tool mounting slot 113, and the bottom of the mounting groove 1131 refers to the inner wall position of the mounting groove 1131 opposite to the opening of the tool mounting slot 113, so that all the broaches 120 are mounted in the tool mounting slot 113 toward the opening direction of the tool mounting slot 113, so as to reduce the mounting difficulty of each broach 120.
The depth of at least two mounting grooves 1131 is different, so can make a plurality of mounting grooves 1131 form the recess of echelonment in cutter mounting groove 113, when further reducing the broach 120 installation degree of difficulty, still can guarantee that the sword tooth of a plurality of broaches 120 can enclose in cutter mounting groove 113 and establish formation broaching portion 130.
In the broaching machine for the spindle, the tool post 110 is mounted on the machine body, and the positioning jig 300 is mounted on the table 200, so that one end of the workpiece 400 to be machined on the positioning jig 300, which has the plurality of surfaces 410 to be machined, can be inserted into the broaching portion 130, thereby facilitating broaching. When the positioning jig 300 is plural, each tool mounting recess 113 is provided toward the corresponding positioning jig 300. And the tooth profile of each broach 120 may be determined according to the shape of the corresponding surface 410 to be machined.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that various changes and modifications can be made by those skilled in the art without departing from the spirit of the invention, and these changes and modifications are all within the scope of the invention. Therefore, the protection scope of the present patent should be subject to the appended claims.
Claims (10)
1. A special cutter for a pawl, which is used for being arranged on a special broaching machine for the pawl to perform broaching on a plurality of surfaces to be machined of the pawl, and is characterized by comprising:
the tool apron is provided with a top end and a bottom end which are opposite; the tool apron is provided with a tool mounting groove along the direction from the bottom end to the top end; the inner wall of the cutter mounting groove is provided with a plurality of cutter mounting positions;
the broaching tools correspond to the cutter mounting positions one by one respectively; each broach is mounted on the corresponding cutter mounting position along the direction from the bottom end to the top end, and the cutter teeth of the broach deviate from the cutter mounting position;
and the broaching parts which can be matched with a plurality of surfaces to be machined of the workpieces to be machined to be broached are formed by surrounding the cutter teeth of the broaches.
2. The special tool for a pawl according to claim 1, wherein orthographic projections of at least two of said plurality of said broaches in a plane parallel to the direction of extension of said tool-mount channel at least partially overlap.
3. The special tool for the pawl according to claim 1, wherein at least two of the plurality of broaches are arranged in a staggered manner in a circumferential direction of the tool mounting groove.
4. The special tool for the pawl according to claim 3, wherein at least two of said broaches of said plurality of broaches are aligned or partially misaligned in an extending direction of said tool mounting groove.
5. The special tool for the pawl of claim 1, wherein the height of the teeth on each said broach increases in a direction from said bottom end to said top end.
6. The special tool for a pawl according to claim 5, wherein at least two of the plurality of the broaching tools have different lengths in the longitudinal direction.
7. The special tool for the pawl according to claim 1, wherein the tool post comprises a mounting base plate and a tool mounting portion, the tool mounting portion is disposed on the mounting base plate so that the cross section of the tool post is T-shaped; a plurality of mounting point positions used for being connected with the lathe bed of the special broaching machine for the braking rod are formed on the mounting bottom plate; the plurality of mounting point positions are divided into two groups and are respectively positioned on two sides of the cutter mounting part; the cutter installation part deviates from one side of the installation bottom plate is provided with the cutter installation groove.
8. The special tool for the pawl according to claim 1, wherein the tool mounting groove comprises a plurality of mounting grooves which are sequentially communicated in a circumferential direction; the bottom of each mounting groove is provided with at least one tool mounting position; the depth of at least two of the mounting grooves is different.
9. A special broaching machine for a pawl, which is characterized by comprising a machine body, a special tool for the pawl according to any one of claims 1 to 8, a workbench, a positioning clamp and a broaching driving piece;
the special cutter for the rotation making rod is arranged on the lathe bed; the workbench is slidably arranged on the bed body; the positioning clamp is arranged on the workbench; the broaching driving piece is in transmission connection with the workbench and is used for driving the workbench to drive the workpiece to be machined on the positioning clamp to move in the broaching part along the direction of the bottom end pointing to the top end so as to carry out broaching on a plurality of surfaces to be machined of the workpiece to be machined.
10. The special broaching machine for the pawl according to claim 9, wherein the special broaching machine for the pawl is plural; the special cutters for the rotation making rods are arranged at intervals along the circumferential direction of the workbench, and each cutter mounting groove faces the workbench; and the positioning clamp is arranged at the position of the workbench corresponding to each special cutter for the braking rod.
Priority Applications (1)
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CN202211407790.6A CN115870551A (en) | 2022-11-10 | 2022-11-10 | Special cutter and special broaching machine for making rotating rod |
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CN202211407790.6A CN115870551A (en) | 2022-11-10 | 2022-11-10 | Special cutter and special broaching machine for making rotating rod |
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Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2001071213A (en) * | 1999-08-31 | 2001-03-21 | Hosei Brake Ind Ltd | Broach tool and broach device |
CN2614823Y (en) * | 2003-04-17 | 2004-05-12 | 万向钱潮股份有限公司 | Universal-joint wing type bearing base special broach |
CN205096623U (en) * | 2015-11-04 | 2016-03-23 | 恒锋工具股份有限公司 | Combined type carbide broach |
CN207900356U (en) * | 2017-12-22 | 2018-09-25 | 十堰市泰祥实业股份有限公司 | A kind of Combined scrapping out cutter assembly |
CN207900354U (en) * | 2017-12-22 | 2018-09-25 | 十堰市泰祥实业股份有限公司 | A kind of knife cartridge drawing pin main beating cap |
-
2022
- 2022-11-10 CN CN202211407790.6A patent/CN115870551A/en active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001071213A (en) * | 1999-08-31 | 2001-03-21 | Hosei Brake Ind Ltd | Broach tool and broach device |
CN2614823Y (en) * | 2003-04-17 | 2004-05-12 | 万向钱潮股份有限公司 | Universal-joint wing type bearing base special broach |
CN205096623U (en) * | 2015-11-04 | 2016-03-23 | 恒锋工具股份有限公司 | Combined type carbide broach |
CN207900356U (en) * | 2017-12-22 | 2018-09-25 | 十堰市泰祥实业股份有限公司 | A kind of Combined scrapping out cutter assembly |
CN207900354U (en) * | 2017-12-22 | 2018-09-25 | 十堰市泰祥实业股份有限公司 | A kind of knife cartridge drawing pin main beating cap |
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