CN213615439U - Hydraulic clamp for drilling and reaming hole and milling window of differential housing - Google Patents
Hydraulic clamp for drilling and reaming hole and milling window of differential housing Download PDFInfo
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- CN213615439U CN213615439U CN202022380382.9U CN202022380382U CN213615439U CN 213615439 U CN213615439 U CN 213615439U CN 202022380382 U CN202022380382 U CN 202022380382U CN 213615439 U CN213615439 U CN 213615439U
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- clamp
- differential case
- drilling
- reaming
- hydraulic
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Abstract
The utility model discloses a hydraulic clamp for drilling and reaming holes and milling windows of a differential shell, which relates to the technical field of differential shell processing and aims to solve the problems that the repeated positioning precision deviation of the differential shell on a three-jaw chuck is large, and the processing size is unstable due to insufficient clamping force; the problem that the differential shell cannot be accurately positioned by a manual clamp. The technical scheme is that the device comprises a clamp body, a first clamp used for milling a window of a differential shell and a second clamp used for drilling a reaming hole of the differential shell, wherein the first clamp comprises a first conical seat, a first hollow oil cylinder and a first expansion sleeve which are coaxially arranged in the first conical seat, the differential shell is arranged in the first expansion sleeve, and a first supporting block which is abutted against the end face of the differential shell is arranged on the top surface of the first conical seat; the clamp body is provided with a driving mechanism of the first clamp and the second clamp. An expansion sleeve is used for expanding the outer circle of the differential shell, and the repeated positioning precision is less than 0.006 mm; the expansion sleeve I clamps the differential shell under the action of hydraulic oil, and the clamping force is stable and reliable.
Description
Technical Field
The utility model belongs to the technical field of the technique of differential mechanism casing processing and specifically relates to a hydraulically operated fixture that is used for differential mechanism casing to bore reaming and mill window.
Background
The differential is positioned in a rear axle or a front axle of an automobile transmission system, a client end of the differential consists of a differential shell and five gears, and the five gears are arranged in five cavities of the differential shell.
Referring to fig. 1, in a differential case, a client-side internal cavity of a differential case 8 is composed of five square windows 81 and five pin holes 82, and the differential case is generally clamped by a hydraulic clamp for machining by using a horizontal machining center to mill the five square windows 81 and drill and ream the five pin holes 82. The existing techniques for clamping the differential case are: (1) three-jaw chuck, (2) manual clamp.
The above prior art solutions have the following drawbacks: the repeated positioning precision deviation of the differential shell on the three-jaw chuck is large, so that the qualification rate of the differential shell cannot reach 99 percent, the scrapping cost is high, and the machining size is unstable due to insufficient clamping force; the manual clamp cannot accurately position the differential case (the repeated positioning error is more than 0.006mm), an operator cannot quickly loosen and clamp the differential case on the clamp, the manual operation time of the operator is long (2-3 minutes per piece), and the manual clamp has the risk that the operator forgets to lock the nut, so that the improvement is needed.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a hydraulically operated fixture that is used for differential mechanism casing to bore reaming hole and mill window, it has the quick accurate effect of pressing from both sides tight differential mechanism casing, improvement product processing dimensional stability.
The above technical purpose of the present invention can be achieved by the following technical solutions:
a hydraulic clamp for drilling and reaming a hole and milling a window in a differential case comprises a clamp body, a first clamp which is arranged on the top surface of the clamp body and used for milling the window in the differential case, and a second clamp which is arranged on the side surface of the clamp body and used for drilling and reaming the hole in the differential case, wherein the first clamp comprises a first conical seat fixed on the top surface of the clamp body, a first hollow oil cylinder and a first expansion sleeve which are coaxially arranged in the first conical seat, a differential case is arranged in the first expansion sleeve, and a first supporting block which is abutted against the end surface of the differential case is arranged on the top surface of the first conical seat; and the fixture body is provided with a driving mechanism of the first fixture and the second fixture.
The utility model discloses further set up to: and a first bracket for supporting the differential case is arranged on the top surface of the clamp body.
The utility model discloses further set up to: and a diamond pin aligned with a flange small hole of the differential shell is arranged on the top surface of the first support.
The utility model discloses further set up to: and a mistake-proofing pin aligned with the workpiece hole of the differential shell is arranged on the top surface of the first support.
The utility model discloses further set up to: the second clamp comprises a second conical seat fixed on the side face of the clamp body, a second hollow oil cylinder and a second expansion sleeve, wherein the second hollow oil cylinder and the second expansion sleeve are coaxially arranged in the second conical seat, a differential mechanism shell is arranged in the second expansion sleeve, a second supporting block abutting against the end face of the differential mechanism shell is arranged on the top face of the second conical seat, and a second support used for supporting the differential mechanism shell is arranged on the side face of the clamp body.
The utility model discloses further set up to: the first clamp and the second clamp respectively comprise sensors for detecting gaps between the differential shell and the first supporting block and between the differential shell and the second supporting block.
The utility model discloses further set up to: the second clamp further comprises a lever type oil cylinder and a clamping rod, the lever type oil cylinder is arranged along the second axial direction of the expansion sleeve, the clamping rod is connected to the driving end of the lever type oil cylinder, and the end face of the clamping rod abuts against the end face of the differential shell.
The utility model discloses further set up to: the driving mechanism comprises a clamp hydraulic distributor, a clamp air pipe and a clamp oil pipe, wherein the clamp air pipe and the clamp oil pipe are connected with the clamp hydraulic distributor, and one ends of the clamp air pipe and the clamp oil pipe, which are far away from the clamp hydraulic distributor, are connected with the first clamp and the second clamp.
To sum up, the utility model discloses a beneficial technological effect does:
through the arrangement of the expansion sleeve I and the driving mechanism, the expansion sleeve I is used for expanding the outer circle of the differential shell, and the repeated positioning precision is less than 0.006 mm; the expansion sleeve I clamps the differential shell under the action of hydraulic oil, and the clamping force is stable and reliable; the hydraulic clamp is simple to clamp and unclamp the differential case, and the unclamping and clamping actions only need not exceed 6 seconds.
Drawings
Fig. 1 is a schematic view of a differential case in the related art.
Fig. 2 is a schematic overall structure diagram of an embodiment of the present invention;
FIG. 3 is a schematic view for showing the structure of the first and second clamps;
FIG. 4 is a schematic cross-sectional view for showing the first and second clamps;
fig. 5 is a schematic view for showing a connection structure of the first clamp and the differential case.
In the figure, 1, a clamp body; 2. a first conical seat; 21. a first hollow oil cylinder; 22. a first expansion sleeve; 23. a first supporting block; 24. a first bracket; 3. a second conical seat; 31. a hollow oil cylinder II; 32. a second expansion sleeve; 33. a second supporting block; 34. a second bracket; 4. a diamond pin; 5. a mistake proofing pin; 6. a lever type oil cylinder; 61. a clamping lever; 7. a clamp hydraulic distributor; 71. a clamp air pipe; 72. clamping the oil pipe; 8. a differential housing; 81. a square window; 82. a pin hole.
Detailed Description
The following detailed description of the preferred embodiments of the present invention will be provided in conjunction with the accompanying drawings, so as to enable those skilled in the art to more easily understand the advantages and features of the present invention, and thereby define the scope of the invention more clearly and clearly.
Referring to fig. 2 and 3, for the utility model discloses a hydraulically operated fixture that is used for differential mechanism casing to bore ream and mill window, including the anchor clamps body 1, install and be used for differential mechanism casing 8 to mill the first anchor clamps of window, install and be used for differential mechanism casing 8 to bore the second anchor clamps of reamed hole on the anchor clamps body 1 side on the top surface of anchor clamps body 1. The fixture body 1 is provided with a driving mechanism of the first fixture and the second fixture, the driving mechanism comprises a fixture hydraulic distributor 7, a fixture air pipe 71 and a fixture oil pipe 72, the fixture air pipe 71 and the fixture oil pipe 72 are connected with the fixture hydraulic distributor 7, and one ends of the fixture air pipe 71 and the fixture oil pipe 72, which are far away from the fixture hydraulic distributor 7, are connected with the first fixture and the second fixture. The fixture body 1 is arranged on a workbench of a machine tool, and the fixture body 1 is a base body used for installing other fixture components.
Referring to fig. 3 and 4, the first clamp includes a first conical seat 2 fixed on the top surface of the clamp body 1, and a first hollow oil cylinder 21 and a first expansion sleeve 22 coaxially disposed in the first conical seat 2, the first expansion sleeve 22 is internally provided with the differential case 8, and the top surface of the first conical seat 2 is provided with a first supporting block 23 abutting against the end surface of the differential case 8. The top surface of the clamp body 1 is provided with a first bracket 24 for supporting the differential case 8. The hollow oil cylinder I21 pulls the expansion sleeve I22 to expand the outer circle of the workpiece, pulls the workpiece to the supporting block I23 and clings to the supporting block I23, so that a gap cannot be reserved between the differential case 8 and the supporting block I23, and the positioning function and the workpiece clamping function are achieved. And the expansion sleeve I22 is used for expanding the outer circle of the differential shell 8, and the repeated positioning precision is less than 0.006 mm. The expansion sleeve I22 clamps the differential case 8 under the action of hydraulic oil, and the clamping force is stable and reliable. The hydraulic clamp is simple to clamp and unclamp the differential case 8, and the unclamping and clamping actions need only be no more than 6 seconds. The clamp body 1 is provided with an air hole, and the machine tool can judge whether scrap iron exists between the first supporting block 23 and the differential case 8 after clamping through the pressure of compressed air.
Referring to fig. 4 and 5, the top surface of the first bracket 24 is provided with diamond-shaped pins 4 aligned with the flange apertures of the differential case 8, and the top surface of the first bracket 24 is provided with error-proofing pins 5 aligned with the workpiece apertures of the differential case 8. The freedom of rotation direction is limited by the positioning of the diamond-shaped pin 4 in the workpiece hole. Two error-proofing pins 5 are arranged to prevent the phase of the workpiece from being wrongly assembled when the workpiece is clamped.
Referring to fig. 4 and 5, the second fixture includes a second conical seat 3 fixed on the side surface of the fixture body 1, and a second hollow oil cylinder 31 and a second expansion sleeve 32 coaxially disposed in the second conical seat 3, a differential case 8 is disposed in the second expansion sleeve 32, a second support block 33 abutting against the end surface of the differential case 8 is disposed on the top surface of the second conical seat 3, and a second support bracket 34 for supporting the differential case 8 is disposed on the side surface of the fixture body 1. The first clamp and the second clamp both comprise sensors for detecting gaps between the differential case 8 and the first support block 23 and between the differential case 8 and the second support block 33. The second clamp further comprises a lever type oil cylinder 6 arranged along the axial direction of the second expansion sleeve 32 and a clamping rod 61 connected to the driving end of the lever type oil cylinder 6, and the end face of the clamping rod 61 abuts against the end face of the differential case 8. The clamping rod 61 further increases the clamping force on the differential case 8 when drilling a reamed hole. The clamp hydraulic distributor 7 is installed on the clamp body 1, is responsible for supplying oil to the first hollow oil cylinder 21, the second hollow oil cylinder 31 and the lever type oil cylinder 6 through a clamp oil pipe 72, and supplies air to the first supporting block 23 and the second supporting block 33 through a clamp air pipe 71.
The implementation principle of the embodiment is as follows: an operator manually places the differential shell 8 into the hydraulic clamp, the outer circle of the differential shell 8 is placed into the expansion sleeve I22, the flange small hole of the differential shell 8 is aligned with the diamond-shaped pin 4, the end face of the differential shell 8 is in contact with the end face of the supporting block I23, the second clamp repeats the actions, and therefore the feeding action of the operator on the workpiece is completed.
An operator presses a clamp clamping button on a machine tool, hydraulic oil enters the clamp body 1 from the clamp hydraulic distributor 7 through the clamp oil pipe 72 to drive the lever type oil cylinder 6, the hollow oil cylinder I21 and the hollow oil cylinder II 31, the expansion sleeve I22 and the expansion sleeve II 32 are pulled to complete clamping action of the differential case 8, compressed air enters the clamp body 1 from the clamp hydraulic distributor 7 through the clamp air pipe 71 and finally reaches the supporting block I23 and the supporting block II 33, if gaps exist among the supporting block I23, the supporting block II 33 and the differential case 8, air leakage is avoided, otherwise, air leakage is avoided, and the machine tool leakage sensor can judge whether scrap iron exists between the supporting block I23 and the differential case 8.
After the machining is completed, the hydraulic clamp loosens the differential housing 8: an operator presses a button of the machine tool to release the button, hydraulic oil enters the clamp body 1 through the clamp hydraulic distributor 7, the lever type oil cylinder 6, the hollow oil cylinder I21 and the hollow oil cylinder II 31 are driven, the expansion sleeve I22 and the expansion sleeve II 32 are pushed respectively to complete the loosening action of the differential shell 8, and then the operator can manually take out the differential shell 8.
The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all the equivalent structures or equivalent processes that are used in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.
Claims (8)
1. The utility model provides a hydraulically operated fixture that is used for differential mechanism casing to bore reaming hole and mill window which characterized in that: the clamp comprises a clamp body (1), a first clamp which is arranged on the top surface of the clamp body (1) and used for milling a window of a differential case (8), and a second clamp which is arranged on the side surface of the clamp body (1) and used for drilling and reaming a differential case (8), wherein the first clamp comprises a first conical seat (2) fixed on the top surface of the clamp body (1), a first hollow oil cylinder (21) and a first expansion sleeve (22) which are coaxially arranged in the first conical seat (2), the differential case (8) is arranged in the first expansion sleeve (22), and a first supporting block (23) which is abutted against the end surface of the differential case (8) is arranged on the top surface of the first conical seat (2); the clamp body (1) is provided with a driving mechanism of the first clamp and a driving mechanism of the second clamp.
2. The hydraulic clamp for drilling and reaming a differential case and milling a window according to claim 1, wherein: a first bracket (24) for supporting the differential case (8) is arranged on the top surface of the clamp body (1).
3. The hydraulic clamp for drilling and reaming a differential case and milling a window according to claim 2, wherein: and a diamond pin (4) aligned with a flange small hole of the differential case (8) is arranged on the top surface of the first bracket (24).
4. The hydraulic clamp for drilling and reaming a differential case and milling a window according to claim 3, wherein: and a mistake-proofing pin (5) aligned with a workpiece hole of the differential case (8) is arranged on the top surface of the first bracket (24).
5. The hydraulic clamp for drilling and reaming a differential case and milling a window according to claim 1, wherein: the second clamp comprises a second conical seat (3) fixed on the side face of the clamp body (1), a second hollow oil cylinder (31) and a second expansion sleeve (32) which are coaxially arranged in the second conical seat (3), a differential case (8) is arranged in the second expansion sleeve (32), a second supporting block (33) which is abutted against the end face of the differential case (8) is arranged on the top face of the second conical seat (3), and a second support (34) used for supporting the differential case (8) is arranged on the side face of the clamp body (1).
6. The hydraulic clamp for drilling and reaming a differential case and milling a window according to claim 5, wherein: the first clamp and the second clamp respectively comprise sensors for detecting gaps between the differential case (8) and the first supporting block (23) and between the differential case (8) and the second supporting block (33).
7. The hydraulic clamp for drilling and reaming a differential case and milling a window according to claim 5, wherein: the second clamp further comprises a lever type oil cylinder (6) arranged along the axial direction of the second expansion sleeve (32) and a clamping rod (61) connected to the driving end of the lever type oil cylinder (6), and the end face of the clamping rod (61) is abutted to the end face of the differential case (8).
8. The hydraulic clamp for drilling and reaming a differential case and milling a window according to claim 7, wherein: the driving mechanism comprises a clamp hydraulic distributor (7), a clamp air pipe (71) and a clamp oil pipe (72), wherein the clamp air pipe (71) and the clamp oil pipe (72) are connected with the clamp hydraulic distributor (7), and one ends, far away from the clamp hydraulic distributor (7), of the clamp air pipe (71) and the clamp oil pipe (72) are connected to a first clamp and a second clamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022380382.9U CN213615439U (en) | 2020-10-23 | 2020-10-23 | Hydraulic clamp for drilling and reaming hole and milling window of differential housing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022380382.9U CN213615439U (en) | 2020-10-23 | 2020-10-23 | Hydraulic clamp for drilling and reaming hole and milling window of differential housing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213615439U true CN213615439U (en) | 2021-07-06 |
Family
ID=76622194
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022380382.9U Active CN213615439U (en) | 2020-10-23 | 2020-10-23 | Hydraulic clamp for drilling and reaming hole and milling window of differential housing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213615439U (en) |
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2020
- 2020-10-23 CN CN202022380382.9U patent/CN213615439U/en active Active
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