Self-cleaning gear shaping clamp for shaft

Abstract

The utility model relates to a self-cleaning gear shaping clamp for a shaft. The technical problem that scrap iron on the surfaces of a base and a tip of a gear shaping clamp in the prior art cannot be cleaned thoroughly is solved. The automatic air blowing device comprises an automatic air blowing mechanism and a self-cleaning air path, the automatic air blowing mechanism is composed of two deep groove ball bearings, a quick connector, a rotary air inlet sleeve and an O-shaped ring, and an annular groove is formed between the inner wall of the rotary air inlet sleeve and the outer wall of a body; the self-cleaning gas circuit is arranged in the body of the gear shaping clamp, an inlet is formed in the outer wall of the body and connected with the annular groove, and an outlet is formed in the tail end of the inner wall of the body and corresponds to the tip. After gear shaping is completed, the gear shaping clamp can blow air from bottom to top, and scrap iron on the surfaces of a base and a tip of the gear shaping clamp is thoroughly cleaned.

Description

Technical Field

[0001] The utility model relates to a gear inserting fixture for an intermediate shaft, in particular to a self-cleaning gear inserting fixture for a shaft. Background Art

[0002] As part of the automobile transmission system, the intermediate shaft often needs to be processed by gear shaping, and needs to be fixed on the machine tool by a gear shaping fixture for gear shaping operation. For the Ford intermediate shaft with a total length of 555mm, in order to ensure the gear shaping accuracy, the gear shaping fixture needs to be positioned as close to the processing position as possible, so the height of the gear shaping fixture must be increased, which will cause the top at the bottom of the gear shaping fixture to be too deep. After the gear shaping process, the iron filings generated will enter the bottom of the gear shaping fixture when unloading, and randomly adhere to the cone surface of the top; at this time, because the top is too deep, the operator uses an air gun to manually blow air from top to bottom, and it is difficult to clean the iron filings at the bottom of the gear shaping fixture.

[0003] In the prior art, in order to improve the chip removal effect of the gear-slotting clamp, the comparative document (CN 218224966 U) discloses a gear-slotting mechanism that is convenient for chip removal; it includes a base sleeve connected to a machine tool, a first limiting part is connected inside the base sleeve, a clamping shell is connected to the top of the first limiting part, and a second limiting part is connected inside the base sleeve; the second limiting part has an insertion end, and a top end is sealed and connected inside it; a chip removal notch is machined at the top end, and a pull rod is connected to the bottom end by bolts; the pull rod is connected to the second limiting part by passing through the sliding sleeve through a long bolt; a clamping sleeve is connected inside the clamping shell, and an insertion gap is provided between the clamping sleeve and the bottom of the clamping shell, and the insertion gap allows the insertion end to be inserted; the clamping is more stable through the cooperation of the top end, the clamping sleeve and the second limiting part, and the provision of the chip removal channel enables iron chips to be discharged in time, thereby improving its processing quality and tool life.

[0004] In the reference document, the base sleeve connected to the machine tool includes a first limiting part and a second limiting part. The top of the second limiting part is an insertion end. A chip removal hole is machined in the body near the insertion end, and a top part is sealed and connected inside. The sharp part of the top part is machined with a chip removal notch, and the chip removal notch is interconnected with the chip removal hole, the chip removal channel, and the chip removal gap. During the gear shaping process, iron chips can reach the chip removal hole through the chip removal notch, and flow into the chip removal channel through the chip removal gap, and be discharged through the chip removal channel. The chip cleaning method of this solution is still from top to bottom, and multiple parts need to be punched.

[0005] It can be seen from the above prior art that most gear shaping fixtures do not consider using a bottom-up method to clean iron chips, and the iron chips are not cleaned thoroughly. Therefore, a gear shaping fixture is needed to solve the problem that the iron chips on the base and the top surface of the gear shaping fixture cannot be cleaned thoroughly when a manual air gun blows air from top to bottom. Summary of the invention

[0006] The utility model aims to solve the technical problem that the iron filings on the surface of the base and the top of the gear-slotting fixture in the prior art cannot be cleaned up, and to provide a self-cleaning gear-slotting fixture for a shaft.

[0007] In order to achieve the above purpose, the technical solutions provided by the utility model are as follows:

[0008] A self-cleaning shaft gear-slotting fixture comprises a body, a stud, a center, a pull-down plate, a threaded sleeve, a rigid expansion sleeve, and a dust cover;

[0009] The threaded sleeve is arranged in the inner cavity of the body, the top end is fixedly connected to the threaded sleeve through the body via a stud, and the pull-down plate is fixedly connected to the stud; the top end is fixedly connected to the body;

[0010] The front end of the inner wall of the body is provided with a conical surface, and the rigid expansion sleeve is arranged at the front end of the inner wall of the body and cooperates with the conical surface;

[0011] The dust cover is fixedly connected to the front end of the body;

[0012] Its special features are:

[0013] It also includes an automatic air blowing mechanism and a self-cleaning air circuit;

[0014] The automatic air blowing mechanism is rotatably arranged on the outer wall of the body near the front end, and an annular groove is arranged between the inner wall of the automatic air blowing mechanism and the outer wall of the body to form an annular air path, which is used to keep the air inlet of the automatic air blowing mechanism fixed and send the gas from the machine tool into the self-cleaning air path;

[0015] The self-cleaning gas path is arranged in the main body, the inlet is arranged on the outer wall of the main body and is connected with the annular groove of the automatic blowing mechanism, and the outlet is arranged on the inner wall of the main body near the tail end and corresponding to the top end, for delivering gas to the top end.

[0016] Further, the automatic blowing mechanism includes a deep groove ball bearing, a quick-connect connector, a rotating air inlet sleeve, and an O-ring;

[0017] The rotating air inlet sleeve is sleeved on the outer wall of the body near the front end, the front end and the rear end of the inner wall of the rotating air inlet sleeve are respectively interference fit with the outer rings of the two deep groove ball bearings, and the inner rings of the two deep groove ball bearings are interference fit with the front end of the outer wall of the body;

[0018] The quick-connect connector is arranged on the outer wall of the rotating air inlet sleeve and communicates with the air vent arranged in the rotating air inlet sleeve and penetrating to the inner wall, and is used for connecting the air path of the machine tool;

[0019] An annular groove communicating with the vent hole is provided between the inner wall of the rotating air inlet sleeve and the outer wall of the body, which is used to connect the quick-plug connector and the self-cleaning air path. Two O-rings are arranged on both sides of the annular groove to ensure the sealing of the annular groove.

[0020] Furthermore, the rotating air intake sleeve is composed of an annular plate and an annular platform arranged in the middle of the inner wall of the annular plate, the inner wall of the annular plate is interference fit with the outer rings of two deep groove ball bearings located on both sides of the annular platform, and the total width of the annular platform and the two deep groove ball bearings is adapted to the width of the annular plate;

[0021] The quick-insert connector is arranged on the outer wall of the annular plate of the rotating air inlet sleeve and is communicated with the vent hole arranged on the annular platform and penetrating to the inner wall;

[0022] The annular groove is arranged between the inner wall of the ring stage and the outer wall of the body and is communicated with the vent hole. Two O-rings are arranged on both sides of the annular groove.

[0023] Furthermore, the annular groove is arranged on the inner wall of the ring platform.

[0024] Furthermore, the self-cleaning gas path includes a first gas path, a second gas path and a third gas path opened on the body;

[0025] The first gas path is arranged along the radial direction of the body, the inlet of the first gas path is communicated with the annular groove, and the outlet is located inside the body;

[0026] The second gas path is arranged along the axial direction of the body, one end of which is located on an annular step surface arranged near the rear end of the body, and the other end is communicated with the outlet of the first gas path;

[0027] One end of the third gas path is located on the outer wall of the body, and the other end is located on the inner wall of the tail end of the body and aligned with the top, and the third gas path is connected with the second gas path;

[0028] Sealing steel balls are respectively arranged at one end of the second gas circuit and the third gas circuit to seal the processing ports of the second gas circuit and the third gas circuit; the ports of the three gas circuits are designed for convenient processing.

[0029] Furthermore, the third air path is arranged to be inclined along the axial direction, and the other end thereof is inclined toward the rear end of the main body, so as to improve the blowing effect.

[0030] Furthermore, it also includes an elastic retaining ring for the shaft; the elastic retaining ring for the shaft is arranged at the front end of the body and is used to limit the deep groove ball bearing.

[0031] Further, it also includes an eye bolt;

[0032] An axial positioning platform is provided on the outer wall of the body, and a lifting eye bolt is arranged on the axial positioning platform for facilitating the loading and unloading of the gear shaping fixture.

[0033] Furthermore, the pull-down plate is fixed to the stud by a first screw; and the top is fixed to the body by a second screw.

[0034] Furthermore, the dust cover is fixed to the front end of the main body by a third screw.

[0035] Compared with the prior art, the utility model has the following beneficial effects:

[0036] 1. The utility model discloses a self-cleaning gear shaping fixture for a shaft. A self-cleaning gas path is arranged in the body of the gear shaping fixture. The outlet of the self-cleaning gas path is aligned with the top of the bottom of the gear shaping fixture. Gas is blown into the bottom of the gear shaping fixture to remove chips from bottom to top, so that the iron chips on the surface of the base and the top of the gear shaping fixture are cleaned, thereby ensuring the accurate positioning of the gear shaping fixture and being suitable for mass production.

[0037] 2. The utility model is a self-cleaning shaft gear-slotting fixture, which adopts the design of an annular groove. When the entire gear-slotting fixture rotates, the automatic blowing mechanism is kept fixed and air is supplied through the annular air path, and the entire air path is connected when the air inlet of the air path connected to the machine tool is fixed.

[0038] 3. The utility model is a self-cleaning gear-slotting fixture for a shaft, which adopts the design of a deep groove ball bearing. Its inner ring is interference fit with the gear-slotting fixture body, and the outer ring is interference fit with the rotating air inlet sleeve. The air inlet is sealed by O-rings on both sides to achieve relative rotation between the gear-slotting fixture body and the external automatic air blowing mechanism, so that the air inlet of the air path connected to the machine tool can be fixed.

[0039] 4. The utility model is a self-cleaning shaft spline clamp, which adds a self-cleaning air path to the existing structure, opens a first air path, a second air path and a third air path on the outer wall of the body and an annular step surface arranged near the rear end of the body, and completes the sealing by sealing steel balls, with low processing cost and easy implementation. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 The utility model is a structural schematic diagram of a self-cleaning shaft gear-inserting fixture embodiment.

[0041] Figure 1 The accompanying drawings are described as follows: 1-body; 2-stud; 3-top; 4-first screw; 5-pull-down plate; 6-second screw; 7-sealing steel ball; 8-eye bolt; 9-deep groove ball bearing; 10-quick plug connector; 11-rotating air inlet sleeve; 12-threaded sleeve; 13-elastic retaining ring for shaft; 14-rigid expansion sleeve; 15-dust cover; 16-third screw; 17-O-ring. DETAILED DESCRIPTION

[0042] The specific technical solutions in the embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0043] like Figure 1 As shown, the utility model is a self-cleaning shaft gear clamp, comprising a body 1, a stud 2, a top 3, a first screw 4, a pull-down plate 5, a second screw 6, a sealing steel ball 7, an eyebolt 8, a deep groove ball bearing 9, a quick-connect connector 10, a rotating air inlet sleeve 11, a threaded sleeve 12, a shaft elastic retaining ring 13, a rigid expansion sleeve 14, a dust cover 15, a third screw 16, and an O-ring 17;

[0044] The threaded sleeve 12 is arranged in the inner cavity of the body 1, the top end 3 is fixedly connected to the threaded sleeve 12 through the rear end of the stud 2 passing through the body 1, and the pull-down plate 5 is fixed on the stud 2 through the first screw 4;

[0045] The top 3 is also fixed to the body 1 by a second screw 6;

[0046] The outer wall of the body 1 is provided with an axial positioning platform, and the eyebolt 8 is arranged on the axial positioning platform;

[0047] The front end of the inner wall of the body 1 is provided with a conical surface, and the rigid expansion sleeve 14 is arranged at the front end of the inner wall of the body 1 and matches with the conical surface;

[0048] The dust cover 15 is fixed to the front end of the body 1 by a third screw 16;

[0049] The rotating air inlet sleeve 11 is sleeved on the outer wall of the body 1 near the front end, and is composed of an annular plate and an annular platform arranged in the middle of the inner wall of the annular plate. The inner wall of the annular plate is interference fit with the outer rings of two deep groove ball bearings 9 located on both sides of the annular platform, and the inner rings of the two deep groove ball bearings 9 are interference fit with the front end of the outer wall of the body 1; the total width of the annular platform and the two deep groove ball bearings 9 is equal to the width of the annular plate;

[0050] The quick-insert connector 10 is arranged on the outer wall of the annular plate of the rotating air inlet sleeve 11 and communicates with the vent hole penetrating through the inner wall;

[0051] The inner wall of the ring table is provided with an annular groove connected to the vent hole, and two O-rings 17 are arranged in parallel on the inner wall of the ring table, located on both sides of the annular groove;

[0052] The shaft elastic retaining ring 13 is arranged at the front end of the body 1 and is used to limit the deep groove ball bearing 9.

[0053] In the embodiment of the utility model, the first gas path, the second gas path and the third gas path are arranged inside the body 1;

[0054] The first gas path is arranged along the radial direction of the body, the inlet of the first gas path is communicated with the annular groove, and the outlet is located inside the body;

[0055] The second gas path is arranged along the axial direction of the body, one end of which is located on an annular step surface arranged near the rear end of the body, and the other end is communicated with the outlet of the first gas path;

[0056] One end of the third gas path is located on the outer wall of the body, and the other end is located on the inner wall of the tail end of the body and aligned with the top, and the third gas path is connected with the second gas path;

[0057] The third gas path is arranged obliquely along the axial direction, and the other end thereof is inclined toward the rear end of the body;

[0058] Two sealing steel balls 7 seal the processing inlets of the second gas path and the third gas path.

[0059] The iron filings cleaning process of the utility model is as follows:

[0060] (1) Loading the workpiece, installing it on the gear shaping fixture, and performing gear shaping on the workpiece;

[0061] (2) After the gear shaping process is completed, release the gear shaping fixture and remove the workpiece;

[0062] (3) Open the air path of the gear shaping fixture and rotate the machine tool worktable to drive the body 1 of the gear shaping fixture to rotate. At this time, the automatic air blowing mechanism outside the body 1 remains stationary;

[0063] (4) High-pressure air enters the self-cleaning air path of the body 1 through the quick-connect connector 10 and is blown out from the side of the top 3 at the bottom of the inner cavity of the body 1, thereby achieving rapid and thorough cleaning of the top 3;

[0064] (5) Continue clamping the next workpiece and enter a new processing cycle.

[0065] The above description is only an embodiment of the present utility model and is not intended to limit the protection scope of the present utility model. Any equivalent structural transformation made using the contents of the present utility model specification and drawings, or directly or indirectly applied in other related technical fields, is included in the patent protection scope of the present utility model.

Claims

1. A self-cleaning shaft gear-slotting fixture, comprising a body (1), a stud (2), a center (3), a pull-down plate (5), a threaded sleeve (12), a rigid expansion sleeve (14), and a dust cover (15); The threaded sleeve (12) is arranged in the inner cavity of the body (1), the tip (3) passes through the body (1) via the stud (2) and is fixedly connected to the threaded sleeve (12), and the pull-down plate (5) is fixedly connected to the stud (2); The tip (3) is also fixedly connected to the body (1); The front end of the inner wall of the body (1) is provided with a conical surface, and the rigid expansion sleeve (14) is arranged at the front end of the inner wall of the body (1) and cooperates with the conical surface; The dust cover (15) is fixedly connected to the front end of the body (1); Features: It also includes an automatic air blowing mechanism and a self-cleaning air circuit; The automatic blowing mechanism is rotatably arranged on the outer wall of the body (1) near the front end, and an annular groove is arranged between the inner wall of the automatic blowing mechanism and the outer wall of the body (1), forming an annular air path, which is used to keep the air inlet of the automatic blowing mechanism fixed and send the gas into the self-cleaning air path; The self-cleaning gas path is arranged in the body (1), the inlet is arranged on the outer wall of the body (1) and is connected to the annular groove of the automatic blowing mechanism, and the outlet is arranged on the inner wall of the body (1) near the tail end and corresponds to the top (3) for delivering gas to the top (3).

2. A self-cleaning shaft gear-inserting fixture according to claim 1, characterized in that: The automatic air blowing mechanism comprises a deep groove ball bearing (9), a quick-connect connector (10), a rotating air inlet sleeve (11), and an O-ring (17); The rotating air inlet sleeve (11) is sleeved on the outer wall of the body (1) near the front end, the front end and the rear end of the inner wall of the rotating air inlet sleeve (11) are respectively interference fit with the outer rings of the two deep groove ball bearings (9), and the inner rings of the two deep groove ball bearings (9) are interference fit with the front end of the outer wall of the body (1); The quick-connect connector (10) is arranged on the outer wall of the rotating air intake sleeve (11) and is communicated with a vent hole arranged in the rotating air intake sleeve (11) and penetrating to the inner wall; An annular groove communicating with the vent hole is provided between the inner wall of the rotating air inlet sleeve (11) and the outer wall of the body (1) for connecting the quick-connect connector (10) with the self-cleaning air path. The two O-rings (17) are arranged in parallel on both sides of the annular groove for ensuring the sealing of the annular groove.

3. A self-cleaning shaft gear-inserting fixture according to claim 2, characterized in that: The rotating air inlet sleeve (11) is composed of an annular plate and an annular platform arranged in the middle of the inner wall of the annular plate, the inner wall of the annular plate is interference-fitted with the outer rings of the two deep groove ball bearings (9) located on both sides of the annular platform, and the total width of the annular platform and the two deep groove ball bearings (9) is adapted to the width of the annular plate; The quick-connect connector (10) is arranged on the outer wall of the annular plate of the rotating air inlet sleeve (11) and is connected to a vent hole arranged on the annular platform and penetrating to the inner wall; The annular groove is arranged between the inner wall of the ring stage and the outer wall of the body (1), and is communicated with the vent hole. The two O-rings (17) are arranged on both sides of the annular groove.

4. A self-cleaning shaft gear-inserting fixture according to claim 3, characterized in that: The annular groove is arranged on the inner wall of the ring platform.

5. A self-cleaning shaft gear-slotting fixture according to any one of claims 2 to 4, characterized in that: The self-cleaning gas path comprises a first gas path, a second gas path and a third gas path which are opened on the body (1); The first gas path is arranged along the radial direction of the body (1), the inlet of the first gas path is communicated with the annular groove, and the outlet is located inside the body (1); The second gas path is arranged along the axial direction of the body (1), one end of which is located on an annular step surface arranged near the rear end of the body (1), and the other end is connected to the outlet of the first gas path; One end of the third gas path is located on the outer wall of the body (1), and the other end is located on the inner wall of the rear end of the body (1) and is aligned with the top (3), and the third gas path is connected to the second gas path; One end port of the second gas circuit and the third gas circuit is respectively provided with a sealing steel ball (7) for sealing the one end port of the second gas circuit and the third gas circuit.

6. A self-cleaning shaft gear-slotting fixture according to claim 5, characterized in that: The third gas path is arranged obliquely along the axial direction, and the other end thereof is inclined toward the rear end of the body (1).

7. A self-cleaning shaft gear-slotting fixture according to claim 6, characterized in that: Also includes a shaft elastic retaining ring (13); The shaft elastic retaining ring (13) is arranged at the front end of the body (1) and is used to limit the position of the deep groove ball bearing (9).

8. The self-cleaning shaft gear-inserting fixture according to claim 1, characterized in that: Also includes an eye bolt (8); The outer wall of the body (1) is provided with an axial positioning platform, and the eye bolt (8) is arranged on the axial positioning platform.

9. The self-cleaning shaft gear-inserting fixture according to claim 1, characterized in that: The pull-down plate (5) is fixed on the stud (2) by a first screw (4); The tip (3) is fixed to the body (1) by a second screw (6).

10. The self-cleaning shaft gear-inserting fixture according to claim 1, characterized in that: The dust cover (15) is fixed to the front end of the body (1) by means of a third screw (16).

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