CN113977364B - Broach mechanism for tool grinder spindle - Google Patents
Broach mechanism for tool grinder spindle Download PDFInfo
- Publication number
- CN113977364B CN113977364B CN202111169580.3A CN202111169580A CN113977364B CN 113977364 B CN113977364 B CN 113977364B CN 202111169580 A CN202111169580 A CN 202111169580A CN 113977364 B CN113977364 B CN 113977364B
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- piston
- piston cavity
- cylinder body
- cavity
- mandrel
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B3/00—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/04—Headstocks; Working-spindles; Features relating thereto
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
Abstract
The utility model provides a broach mechanism for tool grinder main shaft, includes cylinder body (1), cylinder body support cover (2) with cylinder body (1) fastening connection, establish first piston (3) in cylinder body (1) inside, establish second piston (4), dabber (8) in cylinder body (1) inside, second piston (4) cover is established on first piston (3) to with first piston (3) fastening connection, first piston (3) are at inside first piston chamber (5) and the second piston chamber (6) that form each other and do not communicate of cylinder body (1), the second piston is at inside third piston chamber (7) that forms of cylinder body (1), dabber (8) are coaxial to be worn to establish in first piston (3), just dabber (8) can be along with first piston (3) axial motion, dabber (8) and first piston (3) swivelling joint. The invention can provide different strokes for different cutters, has simple structure and is easy to install and disassemble.
Description
Technical Field
The invention relates to the field of tool grinders, in particular to a broach mechanism for a main shaft of a tool grinder.
Background
In prior art, broach mechanism adopts dish spring or coil spring to provide broach power more, the broach power and the broach stroke that this kind of structure provided are limited, inconvenient adjustment of doing, when using different cutters, hardly satisfy various requirements, or just set up 1 piston and change the stroke, change broach power and stroke through the pressure that changes the piston chamber on piston both sides, make mistakes easily during the operation, and the cutter that is suitable for is limited, when phenomenons such as emergence gas leakage, there is not standby scheme, broach mechanism can't work, and the production efficiency is reduced, the security is low.
Disclosure of Invention
The invention aims to provide a broach mechanism for a tool grinder spindle, which can provide different strokes for different cutters, can further select whether a first piston cavity is communicated with a third piston cavity according to actual working conditions, and is simple in structure and convenient to mount and dismount.
In order to achieve the technical purpose and achieve the technical requirements, the invention adopts the technical scheme that: a broach mechanism for a tool grinding machine spindle comprises a cylinder body, a cylinder body supporting sleeve fixedly connected with the cylinder body, a first piston arranged in the cylinder body, a second piston arranged in the cylinder body and a mandrel, wherein the second piston is sleeved on the first piston and fixedly connected with the first piston;
when the first piston cavity and the third piston cavity are not communicated with each other, the first piston cavity and the third piston cavity are independent from each other, and when broaching is carried out, gas is introduced into the first piston cavity or the third piston cavity or the first piston cavity and the third piston cavity simultaneously, so that the requirements of different cutters on broaching force are met;
when the first piston cavity is communicated with the third piston cavity, gas is introduced into the first piston cavity, and the first piston cavity is communicated with the third piston cavity, so that pressure can be generated in the third piston cavity, and the broach force is close to twice of that of the first piston cavity which is used independently.
As a preferred technical scheme: the coaxial cover of dabber is equipped with two thrust bearings, the dabber passes through thrust bearing and is connected with first piston, two thrust bearing blocks respectively establishes at the both ends of first piston.
As a preferred technical scheme: and one end of the mandrel, which is close to the second piston, is spirally provided with a locking nut, and the locking nut abuts against one of the thrust bearings.
As a preferred technical scheme: one end of the cylinder body, which is far away from the cylinder body supporting sleeve, is provided with a protective cover.
The invention has the beneficial effects that: a broach mechanism for a tool grinder spindle, compared with the conventional scheme:
1) the combination of the first piston and the second piston can better meet the requirements of different cutters on different strokes, the pressure of the first piston cavity and the pressure of the third piston cavity can be equal or unequal, and different pressures are set for different cutters, so that different cutter pulling forces exist, and the first piston cavity and the third piston cavity can provide enough strokes;
2) preferably, the first piston cavity and the third piston cavity are not communicated with each other, so that the first piston cavity and the third piston cavity are independently ventilated, and the first piston cavity or the third piston cavity can be flexibly switched to meet different requirements of different cutters on the broaching force and different stroke requirements; gas can be introduced into the first piston cavity and the third piston cavity simultaneously, and the stroke can be finely adjusted; the independent first piston cavity and the independent third piston cavity can also prevent one of the piston cavities from being failed and cannot be used continuously;
3) preferably, the first piston cavity and the third piston cavity are communicated with each other, so that the first piston cavity and the third piston cavity have the same pressure, and double broach force can be generated in the same stroke, the broach effect is better, and the production efficiency is higher;
4) preferably, the thrust bearing can well bear the axial force and can enable the mandrel to rotate around the axis of the first piston rod;
5) preferably, the locking nut is easy to install and disassemble, and the locking effect is good;
6) preferably, the protective cover can prevent the intrusion of foreign matter such as moisture and dust.
Drawings
FIG. 1 is a block diagram of the present invention;
in fig. 1, a cylinder; 101. a partition plate; 2. a cylinder body supporting sleeve; 3. a first piston; 4. a second piston; 5. a first piston chamber; 6. a second piston chamber; 7. a third piston chamber; 8. a mandrel; 801. connecting holes; 802. a projection; 9. a thrust bearing; 10. locking the nut; 11. a protective cover.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if the terms "top", "bottom", "left", "right", "front", "back", "inner", "outer", etc. are used for indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for convenience of description of the present invention, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and are not to be construed as limiting the present patent, and the specific meaning of the terms described above will be understood by those of ordinary skill in the art according to the specific circumstances.
Referring to fig. 1, a broach mechanism for a tool grinder spindle includes a cylinder body 1, a cylinder body support sleeve 2 fastened to the cylinder body 1, a first piston 3 disposed inside the cylinder body 1, a second piston 4 disposed inside the cylinder body 1, and a mandrel 8, where the second piston 4 is sleeved on the first piston 3 and fastened to the first piston 3, the first piston 3 forms a first piston cavity 5 and a second piston cavity 6 which are not communicated with each other inside the cylinder body 1, the second piston 4 forms a third piston cavity 7 inside the cylinder body 1, the mandrel 8 is coaxially inserted into the first piston 3, the mandrel 8 can move axially along with the first piston 3, and the mandrel 8 is rotatably connected to the first piston 3; the cylinder body supporting sleeve 2 is arranged on a main shaft box body, one end of a core shaft 8 is provided with a connecting hole 801, the connecting hole 801 is used for installing a connecting rod, a cutter is arranged on the connecting rod, the arrow direction in the figure 1 is the front end, namely, one end facing the cutter is the front end, and one end deviating from the cutter is the rear end, a partition plate 101 is arranged in the cylinder body 1, the inside of the cylinder body 1 is divided into a first chamber and a second chamber by the partition plate 101, a first piston 3 and a second piston 4 are respectively arranged at two sides of the partition plate 101, the first piston 3 penetrates through the cylinder body 1 supporting sleeve, the second piston 4 penetrates through the partition plate and is sleeved on the first piston 3, a first piston cavity 5 is arranged between the first piston 3 and the cylinder body 1 supporting sleeve, a second piston cavity 6 is arranged between the first piston 3 and the partition plate 101, a third piston cavity 7 is arranged between the second piston 4 and the partition plate 101, and gas is introduced into at least one of the first piston cavity 5 and the third piston cavity 7, so as to pull the core shaft 8, the cutter is pulled through the connecting rod to finish the broaching action, the first piston cavity 5 and the third piston cavity 7 can have different strokes to meet different requirements of the broaching, the pressures of the first piston cavity 5 and the third piston cavity 7 can be equal or unequal, and different broaching forces are set for different cutters;
in practical operation, the first piston cavity 5, the second piston cavity 6 and the third piston cavity 7 need certain sealing performance, and the sealing performance is improved through the following scheme: the first piston 3 is connected with the cylinder body 1 supporting sleeve in a sealing mode, the outermost side circumferential surface of the first piston 3 is connected with the radial cavity wall of the first cavity in a sealing mode, the outermost side circumferential surface of the second piston 4 is connected with the radial cavity wall of the second cavity in a sealing mode, the second piston 4 is connected with the partition plate 101 in a sealing mode, the first piston 3 is connected with the cylinder body supporting sleeve 2 in a sealing mode, specifically, a sealing groove is formed in the position needing sealing, and an O-shaped ring is arranged in the sealing groove.
As shown in fig. 1, the first piston cavity 5 is not communicated with the third piston cavity 7, the first piston cavity 5 is independent of the third piston cavity 7, and the pressure of the gas introduced into the first piston cavity 5 can be different from the pressure of the gas introduced into the third piston cavity 7, so that the gas can be introduced into the first piston cavity 5 or the third piston cavity 7 during broaching, thereby meeting the requirements of different cutters on broaching force, and having clear operation logic, simplicity and convenience; the first piston cavity 5 and the third piston cavity 7 can be simultaneously filled with gas, different broach forces exist, and the stroke can be finely adjusted by adjusting the gas pressure on the two sides, so that the processing precision is improved; when one of the first piston cavity 5 and the third piston cavity 7 has a fault, the other piston cavity can still work, so that the influence of the fault on the broaching tool is reduced, the safety in the machining process is better, and the loss caused by the fault is reduced.
As shown in fig. 1, the first piston cavity 5 is communicated with the third piston cavity 7 through an external air pipe, an air passage is arranged in the inner wall of the cylinder body 1, the air passage communicates the first piston cavity 5 with the third piston cavity 7, taking the first piston cavity 5 as an example, if air is introduced into the first piston cavity 5, because the first piston cavity 5 is communicated with the third piston cavity 7, pressure can be generated in the third piston cavity 7, the broach force is much larger than that of the broach force which singly uses the first piston cavity 5, the broach force is close to twice of the broach force which singly uses the first piston cavity 5, the broach is faster, the operation time is shorter, the production efficiency is improved, and the stroke is not influenced.
As shown in fig. 1, the coaxial cover of dabber 8 is equipped with two thrust bearings 9, dabber 8 passes through thrust bearing 9 and is connected with first piston 3, two thrust bearing 9 blocks respectively and establishes at the both ends of first piston 3, and thrust bearing 9 can bear the axial force better to dabber 8 can rotate around the axis of first piston 3 through thrust bearing 9, thereby be convenient for process, it is further, the rear end of dabber 8 is equipped with lock nut 10 soon, the front end department that is close to dabber 8 on the dabber 8 is equipped with bulge 802, the bulge offsets with thrust bearing 9 that leans forward, lock nut 10 offsets with thrust bearing 9 that wherein leans backward, and restriction dabber 8 is for first piston 3 axial motion, and dabber 8 just can be along with first piston 3 axial motion like this.
As shown in fig. 1, a protection cover 11 is disposed at one end of the cylinder body 1 away from the cylinder body support sleeve 2 to prevent foreign matters such as gas and dust from entering the cylinder body 1 and damaging parts.
Example 1
A broach mechanism for a tool grinder spindle comprises a cylinder body 1, a cylinder body supporting sleeve 2, a first piston 3, a second piston 4 and a mandrel 8, wherein the cylinder body supporting sleeve 2 is fixedly connected with the cylinder body 1, the first piston 3 is arranged in the cylinder body 1, the second piston 4 is sleeved on the first piston 3 and is fixedly connected with the first piston 3, the first piston 3 forms a first piston cavity 5 and a second piston cavity 6 which are not communicated with each other in the cylinder body 1, the second piston 4 forms a third piston cavity 7 in the cylinder body 1, the third piston cavity 7 is not communicated with the first piston cavity 5, the mandrel 8 is coaxially arranged in the first piston 3 in a penetrating manner, the mandrel 8 can axially move along with the first piston 3, and the mandrel 8 is rotatably connected with the first piston 3; the cylinder body supporting sleeve 2 is installed on a main shaft box body, one end of the core shaft 8 is provided with a connecting hole 801, the connecting hole 801 is used for installing a connecting rod, a cutter is installed on the connecting rod, a partition plate 101 is arranged in the cylinder body 1, the partition plate 101 divides the interior of the cylinder body 1 into a first cavity and a second cavity, a first piston 3 and a second piston 4 are respectively arranged on two sides of the partition plate 101, the first piston 3 penetrates through the cylinder body supporting sleeve 2, the second piston 4 penetrates through the partition plate 101 and is sleeved on the first piston 3, a first piston cavity 5 is arranged between the first piston 3 and the cylinder body supporting sleeve 2, a second piston cavity 6 is arranged between the first piston 3 and the partition plate 101, and a third piston cavity 7 is arranged between the second piston 4 and the partition plate 101.
Two thrust bearings 9 are coaxially sleeved on the mandrel 8, the mandrel 8 is connected with the first piston 3 through the thrust bearings 9, and the two thrust bearings 9 are respectively clamped at two ends of the first piston 3.
One end of the cylinder body 1 departing from the cylinder body supporting sleeve 2 is provided with a protective cover 11.
The arrow direction in fig. 1 is the front end.
Example 2
A broach mechanism for a tool grinder spindle comprises a cylinder body 1, a cylinder body supporting sleeve 2 fixedly connected with the cylinder body 1, a first piston 3 arranged in the cylinder body 1, a second piston 4 arranged in the cylinder body 1 and a mandrel 8, wherein the second piston 4 is sleeved on the first piston 3 and is fixedly connected with the first piston 3, the first piston 3 forms a first piston cavity 5 and a second piston cavity 6 which are not communicated with each other in the cylinder body 1, the second piston 4 forms a third piston cavity 7 in the cylinder body 1, the third piston cavity 7 is communicated with the first piston cavity 5, the mandrel 8 is coaxially arranged in the first piston 3 in a penetrating manner, the mandrel 8 can axially move along with the first piston 3, and the mandrel 8 is rotatably connected with the first piston 3; the cylinder body supporting sleeve 2 is installed on a main shaft box body, one end of the core shaft 8 is provided with a connecting hole 801, the connecting hole 801 is used for installing a connecting rod, a cutter is installed on the connecting rod, a partition plate 101 is arranged in the cylinder body 1, the partition plate 101 divides the interior of the cylinder body 1 into a first cavity and a second cavity, a first piston 3 and a second piston 4 are respectively arranged on two sides of the partition plate 101, the first piston 3 penetrates through the cylinder body supporting sleeve 2, the second piston 4 penetrates through the partition plate 101 and is sleeved on the first piston 3, a first piston cavity 5 is arranged between the first piston 3 and the cylinder body supporting sleeve 2, a second piston cavity 6 is arranged between the first piston 3 and the partition plate 101, and a third piston cavity 7 is arranged between the second piston 4 and the partition plate 101.
Two thrust bearings 9 are coaxially sleeved on the mandrel 8, the mandrel 8 is connected with the first piston 3 through the thrust bearings 9, and the two thrust bearings 9 are respectively clamped at two ends of the first piston 3.
One end of the cylinder body 1 departing from the cylinder body supporting sleeve 2 is provided with a protective cover 11.
The arrow direction in fig. 1 is the front end.
The foregoing examples are given solely for the purpose of illustrating the invention and are not to be construed as limiting the embodiments, and other variations and modifications in form thereof will be suggested to those skilled in the art upon reading the foregoing description, and it is not necessary or necessary to exhaustively enumerate all embodiments and all such obvious variations and modifications are deemed to be within the scope of the invention.
Claims (4)
1. A broach mechanism for a tool grinder spindle comprises a cylinder body (1) and is characterized by further comprising a cylinder body support sleeve (2) fixedly connected with the cylinder body (1), a first piston (3) arranged in the cylinder body (1), a second piston (4) arranged in the cylinder body (1) and a mandrel (8), wherein the second piston (4) is sleeved on the first piston (3) and fixedly connected with the first piston (3), the first piston (3) forms a first piston cavity (5) and a second piston cavity (6) which are not communicated with each other in the cylinder body (1), the second piston forms a third piston cavity (7) in the cylinder body (1), the mandrel (8) is coaxially arranged in the first piston (3) in a penetrating manner, the mandrel (8) can move along with the axial direction of the first piston (3), and the mandrel (8) is rotatably connected with the first piston (3), the first piston cavity (5) and the third piston cavity (7) are not communicated with each other or the first piston cavity (5) and the third piston cavity (7) are communicated with each other;
when the first piston cavity (5) is not communicated with the third piston cavity (7), the first piston cavity (5) is independent of the third piston cavity (7), and when broaching is performed, gas is introduced into the first piston cavity (5), or gas is introduced into the third piston cavity (7), or gas is introduced into the first piston cavity (5) and the third piston cavity (7) simultaneously, so that requirements of different cutters on broaching force are met;
when the first piston cavity (5) is communicated with the third piston cavity (7), gas is introduced into the first piston cavity (5), and because the first piston cavity (5) is communicated with the third piston cavity (7), pressure can be generated in the third piston cavity (7), so that the broach force is close to twice of that of the first piston cavity (5) which is used independently.
2. The broach mechanism for a tool grinding machine spindle according to claim 1, characterized in that two thrust bearings (9) are coaxially sleeved on the mandrel (8), the mandrel (8) is connected with the first piston (3) through the thrust bearings (9), and the two thrust bearings (9) are respectively clamped at two ends of the first piston (3).
3. The broach mechanism for a tool grinding machine spindle according to claim 2, characterized in that a lock nut (10) is screwed to the rear end of the spindle (8), the lock nut (10) abutting against one of the thrust bearings (9).
4. The broach mechanism for a spindle of a tool grinding machine according to claim 1, characterized in that a protective cap (11) is provided at the rear end of the cylinder block (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111169580.3A CN113977364B (en) | 2021-10-08 | 2021-10-08 | Broach mechanism for tool grinder spindle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111169580.3A CN113977364B (en) | 2021-10-08 | 2021-10-08 | Broach mechanism for tool grinder spindle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113977364A CN113977364A (en) | 2022-01-28 |
| CN113977364B true CN113977364B (en) | 2022-08-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111169580.3A Active CN113977364B (en) | 2021-10-08 | 2021-10-08 | Broach mechanism for tool grinder spindle |
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| CN (1) | CN113977364B (en) |
Citations (6)
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| US5096347A (en) * | 1990-04-20 | 1992-03-17 | Mori Seiko Co., Ltd. | Spring clamp with clamped condition holding device |
| CN206839189U (en) * | 2017-05-19 | 2018-01-05 | 深圳市爱贝科精密机械有限公司 | A kind of permanent magnet synchronization motor spindle |
| CN108788195A (en) * | 2018-06-05 | 2018-11-13 | 深圳市爱贝科精密机械有限公司 | A kind of permanent magnet synchronization motor spindle structure |
| CN111890135A (en) * | 2020-07-13 | 2020-11-06 | 广州市昊志机电股份有限公司 | Knife sharpener and broach mechanism |
| CN212918585U (en) * | 2020-09-03 | 2021-04-09 | 常州豪僜机械有限公司 | Multi-layer pneumatic knife striking cylinder with high pressure |
| CN213711470U (en) * | 2020-10-10 | 2021-07-16 | 深圳市速锋科技股份有限公司 | Knife striking cylinder |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6431803B1 (en) * | 2000-08-15 | 2002-08-13 | Fair Friend Enterprise Co, Ltd. | Instantaneous clamping/unclamping mechanism for CNC machine spindle tool units |
| CN103786044B (en) * | 2014-02-14 | 2015-07-29 | 哈尔滨工业大学 | The accurate annular workpieces of pneumatic type plane clamping device decided at the higher level but not officially announced |
| CN204308654U (en) * | 2014-12-11 | 2015-05-06 | 宁波海天精工股份有限公司 | A kind of main shaft is forged a knife oil cylinder |
| US10941790B2 (en) * | 2017-03-15 | 2021-03-09 | Seiko Instruments Inc. | Cylinder device, press machine, workpiece clamping apparatus, cylinder device actuating method, method for clamping workpiece, and method for pressing workpiece |
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2021
- 2021-10-08 CN CN202111169580.3A patent/CN113977364B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5096347A (en) * | 1990-04-20 | 1992-03-17 | Mori Seiko Co., Ltd. | Spring clamp with clamped condition holding device |
| CN206839189U (en) * | 2017-05-19 | 2018-01-05 | 深圳市爱贝科精密机械有限公司 | A kind of permanent magnet synchronization motor spindle |
| CN108788195A (en) * | 2018-06-05 | 2018-11-13 | 深圳市爱贝科精密机械有限公司 | A kind of permanent magnet synchronization motor spindle structure |
| CN111890135A (en) * | 2020-07-13 | 2020-11-06 | 广州市昊志机电股份有限公司 | Knife sharpener and broach mechanism |
| CN212918585U (en) * | 2020-09-03 | 2021-04-09 | 常州豪僜机械有限公司 | Multi-layer pneumatic knife striking cylinder with high pressure |
| CN213711470U (en) * | 2020-10-10 | 2021-07-16 | 深圳市速锋科技股份有限公司 | Knife striking cylinder |
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| CN113977364A (en) | 2022-01-28 |
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