CN210147775U - Grinding strip clamp - Google Patents
Grinding strip clamp Download PDFInfo
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- CN210147775U CN210147775U CN201920562296.4U CN201920562296U CN210147775U CN 210147775 U CN210147775 U CN 210147775U CN 201920562296 U CN201920562296 U CN 201920562296U CN 210147775 U CN210147775 U CN 210147775U
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- feeding
- honing
- differential
- clamp
- outer frame
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Abstract
The utility model discloses a grinding strip anchor clamps comprises feed mechanism, locking device, feeding with measuring force device, adjusting device, work piece positioner, honing device, anchor clamps frame fixing device. The force measuring shaft for feeding is connected with a differential feeding stepped spindle, and the differential feeding stepped spindle is connected with an adjusting shaft; the locking screw is connected with the differential feeding stepped spindle, the fixing sleeve is connected with the right clamp outer frame, and the clamp outer frame is connected with the pressing pivot, so that the rational design of the clamp is realized. The utility model provides a grinding strip fixture with reasonable design and convenient use, which adopts the honing process of rough honing, semi-fine honing and fine honing when carrying out the precise honing, and can fully meet the surface quality requirement of the workpiece; when the dimension measurement is carried out, the precise measurement of the outer diameter of the workpiece can be carried out by replacing the honing device with the workpiece positioning device.
Description
Technical Field
The utility model relates to an integral carbide tool bar honing process technical field, more specifically says, relates to a grinding strip anchor clamps.
Background
Honing as a key technology for precision machining of workpieces plays a significant role in many important fields such as aerospace, war industry, automobiles, precision hydraulic pressure and the like. In recent years, with the rapid development of the tool industry, the integration of honing technology and the tool industry has raised a new revolution in the honing processing field. With the increasing level of industry, the demand for "industrial teeth" -cemented carbide tools is increasing. In the high-precision machining industry, the runout of the hard alloy cutter has fatal influence on the precision of a product, and the runout index of the cutter is mainly limited by the cylindricity index of the hard alloy bar. In the process of grinding and processing the hard alloy bar, the cylindricity of the bar after grinding is influenced by the material and the grinding process, generally ranges from 0.005mm to 0.01mm, and is far away from the cylindricity and the finish requirement of the bar which is finally finished to 0.0005mm to 0.005mm, so that the control of the cylindricity and the finish of the bar used by the hard alloy cutter and the accurate measurement of the outer diameter size of a workpiece are very important.
Disclosure of Invention
The to-be-solved technical problem of the utility model is: when the precise honing is carried out, the honing process of rough honing, semi-precise honing and precise honing is adopted, and the honing state which is properly blocked or blunted is generated at the final stage of processing through the selection of the grinding bars and the processing conditions, so that a good processing surface which is close to a mirror surface can be obtained, and the surface of a workpiece which is processed by honing has good wear resistance; when the dimension measurement is carried out, the precise measurement of the outer diameter of the workpiece can be carried out by replacing the honing device with the workpiece positioning device.
The utility model provides a technical scheme that its technical problem adopted is: the grinding strip fixture is reasonable in design and convenient to use, and comprises a feeding mechanism, a locking device, a force measuring device for feeding, an adjusting device, a workpiece positioning device, a honing device and a fixture outer frame fixing device, wherein the force measuring shaft for feeding is a part of the force measuring device for feeding, a locking screw is a part of the locking device, a fixing sleeve is a part of the feeding mechanism, the force measuring shaft (22) for feeding is connected with a differential feeding stepped spindle (14), and the differential feeding stepped spindle (14) is connected with the adjusting shaft (4): the locking screw (2) is connected with a differential feeding stepped spindle (14), the fixing sleeve (3) is connected with a right clamp outer frame (9-2), and the clamp outer frame (9) is connected with a pressing pivot (8).
The feeding mechanism of the grinding strip clamp consists of a differential feeding stepped spindle (14) and a differential sleeve (5); the locking device consists of a locking screw (2) and a locking valve (16); the force measuring device for feeding consists of a fine adjustment knob (17), a screw (18), a ratchet wheel (19), a spring (20), a check ring (21) and a force measuring shaft (22) for feeding; the adjusting device consists of an adjusting rod (13), a stop pin (12) and an adjusting shaft (4); the workpiece positioning device consists of a right supporting seat (6-2) and a V-shaped supporting seat (7); the honing device consists of a left supporting seat (6-1) and a grinding bar (11); the fixture outer frame fixing device is composed of a pressing pivot (8) and a torque arm (10).
Further, the grinding strip fixture is characterized in that the fixture outer frame (9) consists of a left fixture outer frame (9-1) and a right fixture outer frame (9-2), triangular clamping grooves (24) are formed in the upper portion and the lower portion of the left fixture outer frame (9-1), and the triangular clamping grooves (24) are connected with a honing device; the upper part and the lower part of the right clamp outer frame (9-2) are provided with triangular clamping grooves (24), and the triangular clamping grooves (24) are connected with a workpiece positioning device.
Furthermore, the grinding strip clamp is characterized in that a force measuring shaft pin hole (23) is formed in the outer diameter of the force measuring shaft (22) for feeding, and the force measuring shaft pin hole (23) is moved to enable the force measuring shaft (22) for feeding to be connected and fixed with the differential feeding stepped spindle (14).
Further, according to the grinding strip fixture, the differential feeding stepped spindle (14) is provided with a differential feeding thread (1) in the outer diameter, and the differential feeding thread (1) is a fine thread for honing the outer diameter of a workpiece and measuring the micro-feeding.
Furthermore, the abrasive bar fixture is characterized in that 50 equal division scale marks (15) for differential sleeve feeding are arranged on the outer diameter of the differential sleeve (5) along the circumferential direction, and the numerical value of the interval between every two differential sleeve feeding scale marks (15) is 0.001 mm.
Furthermore, the grinding strip fixture is characterized in that the grinding strip (11) is a metal bond diamond grinding tool, the strength of the selected grinding particles is 120-180 # during rough honing, the strength of the selected grinding particles is 220-320 # during semi-fine honing, and the strength of the selected grinding particles is 400-600 # during fine honing.
The process of honing the outer diameter of the workpiece and measuring micro-feeding comprises the following steps:
(1) the type of the grinding strip (11) is selected according to the material of the workpiece to be processed, and the grinding strip is installed on the left supporting seat (6-1); the type of a V-shaped support (7) is selected according to the length of a processed workpiece, and the V-shaped support is arranged on a right support seat (6-2);
(2) according to the outer diameter of the processed workpiece, the distance between the positioning device and the honing device is adjusted and the positioning device is arranged on a triangular clamping groove (24) in the clamp outer frame (9);
(3) the pressing pivot (8) is adjusted by rotating the torque arm (10) to enable the workpiece to enter a positioning state;
(4) the differential feeding stepped spindle (14) is driven to approach the adjusting shaft (4) by twisting the differential sleeve (5), a workpiece is contacted with the grinding strip (11) and the V-shaped support (7) by rotating the fine adjustment knob (17), the differential sleeve (5) is finely adjusted according to the grinding size of the workpiece, a locking valve (16) is twisted to lock after the grinding feeding amount of each time is determined, the axial micro-gap between the differential feeding stepped spindle (14) and the outer fixture frame (9) is adjusted by the adjusting rod (13), and the adjusting rod (13) is blocked by the blocking pin (12);
(5) fixing a workpiece on a main shaft of a machine tool to align the excircle runout and rotate at a low speed; the bars were manually reciprocated axially using a bar clamp.
The process of measuring micro-feed comprises the following steps:
(1) the outer diameter of the workpiece is measured and positioned by replacing the honing device with the workpiece positioning device;
(2) according to the size of the outer diameter of the workpiece, the outer frame fixing device of the clamp is adjusted to enter a measuring range and be locked;
(3) the accuracy that the scale mark (15) for feeding the differential sleeve is corrected by using a correction sample rod (25) and the horizontal direction reading scale line on the fixed sleeve is vertical is corrected, and an initial value is recorded;
(4) firstly, a feeding mechanism performs rotary feeding; secondly, until the force measured by a force measuring device for feeding is appropriate; finally, the locking device is twisted to lock, and then reading is carried out to obtain an actual measured value.
The utility model has the advantages of it is following and outstanding effect:
1. application to grinding workpieces: because the workpiece rotates at a low speed, the generated thermal deterioration layer is tiny, the cutting depth of abrasive particles is small, a processing strain layer and a residual stress layer generated by the contact of the grinding strip and the surface of the workpiece in the honing process can be reduced, the processing deterioration layer of a previous process can be removed, and the surface quality of the workpiece is improved. Particularly for the hard alloy cutter, the control of cylindricity and finish degree is the key for ensuring the precision of the hard alloy cutter, when the hard alloy bar is honed, a proper grinding bar is selected, the feed amount is controlled, and the cylindricity and finish degree of the bar can be effectively improved;
2. application to the measurement of workpieces: for the grinding and measuring of hard alloy cutter bar, the measurement of the outer diameter of a workpiece is crucial, the cylindricity is a comprehensive index for measuring the roundness and the straightness of the bar, the accuracy that the scale mark for correcting the feeding of the differential sleeve is perpendicular to the reading scale line in the horizontal direction on the fixed sleeve by using the correcting sample bar is used, the measurement error of the workpiece is reduced, and the accurate measurement of the outer diameter of the workpiece is realized by the structural cooperation of the feeding mechanism, the locking device and the force measuring device for feeding.
Drawings
FIG. 1 is a schematic view of a bar clamp.
Fig. 2 is an orthographic three-axis drawing, a front view and a top view of the locking device.
Fig. 3 is a structural sectional view of the force measuring device for feeding.
Fig. 4 is a schematic structural diagram of the adjusting device.
Fig. 5 is a schematic structural diagram of the workpiece positioning device.
FIG. 6 is a schematic structural diagram of a honing device.
Fig. 7 is a schematic structural view of a differential feed stepped spindle.
Fig. 8 is a schematic view of the structure of the differential sleeve feed scale.
FIG. 9 is a schematic view of a bar construction.
FIG. 10 is a schematic view of a workpiece measurement calibration bar.
Wherein: the differential feeding device comprises a differential feeding screw thread 1, a locking screw 2, a fixing sleeve 3, an adjusting shaft 4, a differential sleeve 5, a supporting seat 6, a left supporting seat 6-1, a right supporting seat 6-2, a V-shaped supporting seat 7, a pressing pivot 8, a clamp outer frame 9, a left clamp outer frame 9-1, a right clamp outer frame 9-2, a torque arm 10, a grinding strip 11, a stop pin 12, an adjusting rod 13, a differential feeding stepped spindle 14, a differential sleeve feeding scale line 15, a locking valve 16, a fine adjustment knob 17, a screw 18, a ratchet wheel 19, a spring 20, a check ring 21, a force measuring shaft 22, a force measuring shaft pin hole 23, a triangular clamping groove 24 and a correction sample rod 25.
Detailed Description
The technical solution provided by the present invention is explained in more detail with reference to fig. 1 to 10.
The first specific embodiment is as follows: referring to fig. 1 to 6, the grinding strip clamp comprises a feeding mechanism, a locking device, a force measuring device for feeding, an adjusting device, a workpiece positioning device, a honing device and a clamp outer frame fixing device, wherein a force measuring shaft for feeding is a component of the force measuring device for feeding, a locking screw is a component of the locking device, a fixing sleeve is a component of the feeding mechanism, the force measuring shaft (22) for feeding is connected with a differential feeding stepped spindle (14), and the differential feeding stepped spindle (14) is connected with an adjusting shaft (4): the locking screw (2) is connected with a differential feeding stepped spindle (14), the fixing sleeve (3) is connected with a right clamp outer frame (9-2), and the clamp outer frame (9) is connected with a pressing pivot (8).
The feeding mechanism consists of a differential feeding stepped spindle (14) and a differential sleeve (5); the locking device consists of a locking screw (2) and a locking valve (16); the force measuring device for feeding consists of a fine adjustment knob (17), a screw (18), a ratchet wheel (19), a spring (20), a check ring (21) and a force measuring shaft (22) for feeding; the adjusting device consists of an adjusting rod (13), a stop pin (12) and an adjusting shaft (4); the workpiece positioning device consists of a right supporting seat (6-2) and a V-shaped supporting seat (7); the honing device consists of a left supporting seat (6-1) and a grinding bar (11); the fixture outer frame fixing device is composed of a pressing pivot (8) and a torque arm (10).
Furthermore, the clamp outer frame (9) consists of a left clamp outer frame (9-1) and a right clamp outer frame (9-2), triangular clamping grooves (24) are formed in the upper part and the lower part of the left clamp outer frame (9-1), and the triangular clamping grooves (24) are connected with the honing device; the upper part and the lower part of the right clamp outer frame (9-2) are provided with triangular clamping grooves (24), and the triangular clamping grooves (24) are connected with a workpiece positioning device.
Furthermore, the outer diameter of the force measuring shaft (22) for feeding is provided with a force measuring shaft pin hole (23), and the force measuring shaft pin hole (23) is moved to enable the force measuring shaft (22) for feeding to be connected and fixed with the differential feeding stepped spindle (14).
The second specific embodiment: in combination with the grinding bar clamp shown in fig. 7-9, the differential feeding stepped spindle (14) is provided with a differential feeding thread (1) on the outer diameter, and the differential feeding thread (1) is a fine thread for honing the outer diameter of a workpiece and measuring the micro-feeding.
Furthermore, 50 equal parts of scale marks (15) for differential sleeve feeding are arranged on the outer diameter of the differential sleeve (5) along the circumferential direction, and the numerical value of the interval between every two of the scale marks (15) for differential sleeve feeding is 0.001 mm.
Furthermore, the grinding strip (11) is a metal bond diamond grinding tool, the strength of the selected abrasive particles is 120-180 # during rough honing, the strength of the selected abrasive particles is 220-320 # during semi-fine honing, and the strength of the selected abrasive particles is 400-600 # during fine honing.
The third concrete implementation scheme is as follows: with reference to fig. 1 to 8 and 10, a bar clamp, a process of honing the outer diameter of a workpiece and measuring micro-feeding, the process of honing the outer diameter of the workpiece comprises the following steps:
(1) the type of the grinding strip (11) is selected according to the material of the workpiece to be processed, and the grinding strip is installed on the left supporting seat (6-1); the type of a V-shaped support (7) is selected according to the length of a processed workpiece, and the V-shaped support is arranged on a right support seat (6-2);
(2) according to the outer diameter of the processed workpiece, the distance between the positioning device and the honing device is adjusted and the positioning device is arranged on a triangular clamping groove (24) in the clamp outer frame (9);
(3) the pressing pivot (8) is adjusted by rotating the torque arm (10) to enable the workpiece to enter a positioning state;
(4) the differential feeding stepped spindle (14) is driven to approach the adjusting shaft (4) by twisting the differential sleeve (5), a workpiece is contacted with the grinding strip (11) and the V-shaped support (7) by rotating the fine adjustment knob (17), the differential sleeve (5) is finely adjusted according to the grinding size of the workpiece, a locking valve (16) is twisted to lock after the grinding feeding amount of each time is determined, the axial micro-gap between the differential feeding stepped spindle (14) and the outer fixture frame (9) is adjusted by the adjusting rod (13), and the adjusting rod (13) is blocked by the blocking pin (12);
(5) fixing a workpiece on a main shaft of a machine tool to align the excircle runout and rotate at a low speed; the bars were manually reciprocated axially using a bar clamp.
The process of measuring micro-feed comprises the following steps:
(1) the outer diameter of the workpiece is measured and positioned by replacing the honing device with the workpiece positioning device;
(2) according to the size of the outer diameter of the workpiece, the outer frame fixing device of the clamp is adjusted to enter a measuring range and be locked;
(3) the accuracy that the scale mark (15) for feeding the differential sleeve is corrected by using a correction sample rod (25) and the horizontal direction reading scale line on the fixed sleeve is vertical is corrected, and an initial value is recorded;
(4) firstly, a feeding mechanism performs rotary feeding; secondly, until the force measured by a force measuring device for feeding is appropriate; finally, the locking device is twisted to lock, and then reading is carried out to obtain an actual measured value.
The above is only an embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (7)
1. A grinding strip clamp comprises a feeding mechanism, a locking device, a force measuring device for feeding, an adjusting device, a workpiece positioning device, a honing device and a clamp outer frame fixing device, wherein a force measuring shaft for feeding is a component of the force measuring device for feeding, a locking screw is a component of the locking device, and a fixing sleeve is a component of the feeding mechanism, and is characterized in that: the force measuring shaft (22) for feeding is connected with the differential feeding stepped spindle (14), the differential feeding stepped spindle (14) is connected with the adjusting shaft (4): the locking screw (2) is connected with a differential feeding stepped spindle (14), the fixing sleeve (3) is connected with a right clamp outer frame (9-2), and the clamp outer frame (9) is connected with a pressing pivot (8).
2. The bar clamp of claim 1 wherein: the feeding mechanism consists of a differential feeding stepped spindle (14) and a differential sleeve (5); the locking device consists of a locking screw (2) and a locking valve (16); the force measuring device for feeding consists of a fine adjustment knob (17), a screw (18), a ratchet wheel (19), a spring (20), a check ring (21) and a force measuring shaft (22) for feeding; the adjusting device consists of an adjusting rod (13), a stop pin (12) and an adjusting shaft (4); the workpiece positioning device consists of a right supporting seat (6-2) and a V-shaped supporting seat (7); the honing device consists of a left supporting seat (6-1) and a grinding bar (11); the fixture outer frame fixing device is composed of a pressing pivot (8) and a torque arm (10).
3. The bar clamp of claim 1 wherein: the clamp outer frame (9) consists of a left clamp outer frame (9-1) and a right clamp outer frame (9-2), triangular clamping grooves (24) are formed in the upper portion and the lower portion of the left clamp outer frame (9-1), and the triangular clamping grooves (24) are connected with a honing device; the upper part and the lower part of the right clamp outer frame (9-2) are provided with triangular clamping grooves (24), and the triangular clamping grooves (24) are connected with a workpiece positioning device.
4. A bar clamp as claimed in claim 1 or 2, wherein: the outer diameter of the feeding force measuring shaft (22) is provided with a force measuring shaft pin hole (23), and the force measuring shaft pin hole (23) is moved to enable the feeding force measuring shaft (22) to be connected and fixed with the differential feeding stepped spindle (14).
5. A bar clamp as claimed in claim 1 or 2, wherein: the differential feeding stepped spindle (14) is provided with differential feeding threads (1) in the outer diameter, and the differential feeding threads (1) are used for honing the outer diameter of a workpiece and measuring the fineness of micro feeding
Thread cutting.
6. A bar clamp as claimed in claim 2, wherein: the differential sleeve feeding scale marks (15) are arranged on the outer diameter of the differential sleeve (5) in the circumferential direction in 50 equal parts, and the interval between every two differential sleeve feeding scale marks (15) is 0.001 mm.
7. A bar clamp as claimed in claim 2, wherein: the grinding strip (11) is a metal bond diamond grinding tool, the strength of the selected abrasive particles is 120-180 # during rough honing, the strength of the selected abrasive particles is 220-320 # during semi-fine honing, and the strength of the selected abrasive particles is 400-600 # during fine honing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920562296.4U CN210147775U (en) | 2019-04-24 | 2019-04-24 | Grinding strip clamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920562296.4U CN210147775U (en) | 2019-04-24 | 2019-04-24 | Grinding strip clamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210147775U true CN210147775U (en) | 2020-03-17 |
Family
ID=69755833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920562296.4U Expired - Fee Related CN210147775U (en) | 2019-04-24 | 2019-04-24 | Grinding strip clamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210147775U (en) |
-
2019
- 2019-04-24 CN CN201920562296.4U patent/CN210147775U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200317 Termination date: 20210424 |
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| CF01 | Termination of patent right due to non-payment of annual fee |