CN112318166A - Shifting fork milling machine fixture - Google Patents
Shifting fork milling machine fixture Download PDFInfo
- Publication number
- CN112318166A CN112318166A CN202011265453.9A CN202011265453A CN112318166A CN 112318166 A CN112318166 A CN 112318166A CN 202011265453 A CN202011265453 A CN 202011265453A CN 112318166 A CN112318166 A CN 112318166A
- Authority
- CN
- China
- Prior art keywords
- supporting plate
- milling machine
- spline shaft
- clamp
- threaded hole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000003801 milling Methods 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 238000005520 cutting process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
- B23Q3/06—Work-clamping means
- B23Q3/062—Work-clamping means adapted for holding workpieces having a special form or being made from a special material
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jigs For Machine Tools (AREA)
Abstract
The invention provides a shifting fork milling machine fixture, which comprises a fixture body; the fixture body consists of a base at the bottom and a supporting plate; a circular threaded hole is formed in the supporting plate; a spline shaft is arranged in the circular threaded hole; the spline shaft is fixed on the supporting plate through nuts at two ends; a stop washer is arranged between one end of the spline shaft and the nut; a clamping area is arranged between the other end of the spline shaft and the nut; an inner positioning pin is arranged at the contact part of the round threaded hole and the bottom of the supporting plate; a feeler block is arranged on one side, located in the clamping area, of the top of the supporting plate; the feeler block is fixed on the support plate through a screw. The clamp structure is locally optimized and integrated, and the structure of the clamp is simplified and the automation capability of the clamp is improved as much as possible on the premise of ensuring the functions of the clamp.
Description
Technical Field
The invention belongs to the field of machining equipment, and particularly relates to a shifting fork milling machine fixture.
Background
The fixture is a technological equipment capable of accurately positioning and firmly clamping a workpiece according to certain technical requirements, and is widely applied to the whole technological processes of machining, detection, assembly and the like. In the manufacturing industry of modern machinery and instruments, the improvement of processing precision and productivity and the reduction of manufacturing cost are always the goals pursued by manufacturers. The correct design and reasonable use of the clamp is one of the important technical links for ensuring the processing quality and improving the production efficiency so as to reduce the production cost. Meanwhile, the method also expands the application range of various machine tools and is an essential and important means.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provides a shifting fork milling machine fixture.
A shifting fork milling machine fixture comprises a fixture body; the fixture body consists of a base at the bottom and a supporting plate; a circular threaded hole is formed in the supporting plate; a spline shaft is arranged in the circular threaded hole; the spline shaft is fixed on the supporting plate through nuts at two ends; a stop washer is arranged between one end of the spline shaft and the nut; a clamping area is arranged between the other end of the spline shaft and the nut; an inner positioning pin is arranged at the contact part of the round threaded hole and the bottom of the supporting plate; a feeler block is arranged on one side, located in the clamping area, of the top of the supporting plate; the feeler block is fixed on the support plate through a screw.
Foretell shift fork milling machine fixture, pass through hexagon socket head cap screw between base and the backup pad and fix.
Foretell shift fork milling machine fixture, the base bottom is provided with outer locating pin.
Foretell shift fork milling machine fixture, the base both sides are provided with U type groove
The invention has the beneficial effects that: the shifting fork milling machine fixture has high production efficiency and low labor intensity, and the same positioning datum is adopted to process in each process of the same workpiece as much as possible. The datum of the invention is the center line of the spline hole and the right processing surface of the workpiece is a positioning datum. Therefore, the workpiece is selected to use the center line of the right end face and the spline mandrel to be machined as a main positioning reference, and the precision is high. The clamp structure is locally optimized and integrated, and the structure of the clamp is simplified and the automation capability of the clamp is improved as much as possible on the premise of ensuring the functions of the clamp.
Drawings
FIG. 1 is a side view of the structure of the present invention;
FIG. 2 is a front view of the structure of the present invention;
FIG. 3 is a top view of the structure of the present invention.
Detailed Description
The invention will be further described in detail with reference to examples of embodiments shown in the drawings to which, however, the invention is not restricted.
In the description of the present invention, it should be noted that the terms "center, upper, lower, left, right, vertical, horizontal, inner, outer" and the like indicate orientations or positional relationships based on those shown in the drawings only for convenience of description and simplicity of description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation and be operated, and thus are not to be construed as limiting the present invention, and furthermore, the terms "first, second and third" are used for descriptive purposes only and are not intended to indicate or imply relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly stated or limited, the term "mounted, connected" is to be understood in a broad sense, for example: the two elements may be fixedly connected, detachably connected, or integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected through an intermediate medium, or connected inside two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1, the present invention provides a technical solution: a shifting fork milling machine fixture comprises a fixture body 0; the fixture body 0 consists of a base 1 at the bottom and a supporting plate 3; the base 1 and the support plate 3 are fixed through the hexagon socket head cap screw 2; the bottom of the base 1 is provided with an outer positioning pin 11; u-shaped grooves 12 are formed in two sides of the base 1; a circular threaded hole 13 is formed in the support plate 3; a spline shaft 10 is arranged in the round threaded hole 13; the spline shaft 10 is fixed on the support plate 3 through nuts 9 at two ends; a stop washer 5 is arranged between one end of the spline shaft 10 and the nut 9; a clamping area 8 is arranged between the other end of the spline shaft 10 and the nut 9; the contact part of the circular threaded hole 13 and the bottom of the support plate 3 is provided with an inner positioning pin 4; a tool setting block 7 is arranged on one side, located on the clamping area 8, of the top of the supporting plate 3; the pair of tool blocks 7 are fixed on the supporting plate 3 through screws 6.
The shifting fork milling machine fixture has high production efficiency and low labor intensity, and the same positioning datum is adopted to process in each process of the same workpiece as much as possible. The datum of the invention is the center line of the spline hole and the right processing surface of the workpiece is a positioning datum. Therefore, the workpiece is selected to use the center line of the right end face to be machined and the spline mandrel as a main positioning reference, the precision is high, the cutting force is larger during milling, the cutter teeth are discontinuously machined, and impact and vibration are easily caused, so that the clamping force requirement is higher to ensure the clamping reliability of the workpiece, and the milling machine clamp has enough strength and rigidity. In order to improve the stability of the installation of the milling jig on a machine tool and the dynamic vibration resistance, the structure of each device is compact, the processing surface is as close to the table surface as possible so as to reduce the gravity center of the jig, and the ratio of the height H to the width B of the general jig is limited within the range that H/B is less than or equal to 1-1.25. Milling is highly productive (short cutting time), the design of the tool holder takes into account how quickly the workpiece can be mounted to reduce the assistance time, and the tool holder is typically provided with elements for determining the position and orientation of the tool in order to quickly adjust the relative positions of the tool holder, the machine tool and the tool. The clamp structure of the invention is locally optimized and integrated, the structure of the clamp is simplified and the automation capability of the clamp is increased as much as possible on the premise of ensuring the function of the clamp, and the mounting position of the milling machine clamp on a milling machine workbench directly influences the position precision of a processed surface, so that the mounting method of the clamp needs to be considered during design.
Two positioning keys are arranged under the clamp base, the two positioning keys are embedded into the same T-shaped groove of the milling machine workbench, and the clamp body is fastened on the workbench by using T-shaped bolts, washers and nuts. The cross section of the common positioning key is rectangular. The positioning key can bear the torque during milling, the structural size of the positioning key is standardized, and the positioning key is designed according to the size of a T-shaped groove of a milling machine workbench. For the A-type key, the matching sizes of the A-type key, the fixture body groove and the workbench T-shaped groove are B, and the tolerance band can be h6 or h 8. The width B2 of the groove for installing the positioning key on the clamp is the same as the size B, and the tolerance band can be h7 or js 6. In order to improve the precision, a B-type key can be adopted, and the grinding amount of 0.5mm is reserved in a size B1 matched with the T-shaped groove of the machine tool. In addition, two lugs for penetrating T-shaped bolts are required to be provided on the clamp body, the structural size of the lug is standardized, and a design manual of the clamp can be referred to. In order to ensure the installation accuracy, the distance between the two positioning keys is as large as possible. When the clamp is installed, the key is abutted against one side of the T-shaped groove, so that the influence of the gap is reduced.
Although the preferred embodiments of the present invention have been described in detail, the present invention is not limited to the details of the embodiments, and various equivalent modifications can be made within the technical spirit of the present invention, and the technical solutions of the present invention are within the scope of the present invention.
Claims (4)
1. The utility model provides a shift fork milling machine anchor clamps which characterized in that: comprises a clamp body; the fixture body consists of a base at the bottom and a supporting plate; a circular threaded hole is formed in the supporting plate; a spline shaft is arranged in the circular threaded hole; the spline shaft is fixed on the supporting plate through nuts at two ends; a stop washer is arranged between one end of the spline shaft and the nut; a clamping area is arranged between the other end of the spline shaft and the nut; an inner positioning pin is arranged at the contact part of the round threaded hole and the bottom of the supporting plate; a feeler block is arranged on one side, located in the clamping area, of the top of the supporting plate; the feeler block is fixed on the support plate through a screw.
2. A shifting fork milling machine jig according to claim 1, characterized in that: the base and the supporting plate are fixed through the hexagon socket head cap screws.
3. A shifting fork milling machine jig according to claim 1, characterized in that: and an outer positioning pin is arranged at the bottom of the base.
4. A shifting fork milling machine jig according to claim 1, characterized in that: u-shaped grooves are formed in two sides of the base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011265453.9A CN112318166A (en) | 2020-11-13 | 2020-11-13 | Shifting fork milling machine fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011265453.9A CN112318166A (en) | 2020-11-13 | 2020-11-13 | Shifting fork milling machine fixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112318166A true CN112318166A (en) | 2021-02-05 |
Family
ID=74318666
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011265453.9A Withdrawn CN112318166A (en) | 2020-11-13 | 2020-11-13 | Shifting fork milling machine fixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112318166A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115592441A (en) * | 2022-11-14 | 2023-01-13 | 江西中船航海仪器有限公司（Cn） | Synchronous processing device for clamping multiple workpieces |
-
2020
- 2020-11-13 CN CN202011265453.9A patent/CN112318166A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115592441A (en) * | 2022-11-14 | 2023-01-13 | 江西中船航海仪器有限公司（Cn） | Synchronous processing device for clamping multiple workpieces |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20210205 |
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| WW01 | Invention patent application withdrawn after publication |