Intermediate shaft gear radial positioning hole position degree clamp and using method thereof

Abstract

The invention discloses an intermediate shaft gear radial positioning hole location degree clamp which comprises a supporting plate, and a tooth alignment gauge supporting seat and an L-shaped supporting plate are sequentially arranged on the supporting plate in the transverse direction. A tooth alignment gauge mounting hole is formed in the top of the tooth alignment gauge supporting seat, a tooth alignment gauge is arranged in the tooth alignment gauge mounting hole, and a pressure spring is arranged between the inner wall of the bottom of the tooth alignment gauge mounting hole and the bottom of the tooth alignment gauge; a mounting hole is formed in the upper portion of the L-shaped supporting plate, a body is arranged in the mounting hole and comprises a conical barrel and a cylinder which are sequentially arranged in the transverse direction, different tooth alignment gauges are selected according to tooth grooves of the intermediate shaft gear to be machined, and different expansion sleeves are selected according to different sizes of inner holes of the intermediate shaft gear. And then the intermediate shaft gear to be machined is fixed, subsequent machining of the radial positioning hole is facilitated, and the technical problem that in the prior art, a numerical control end mill cannot directly machine the radial positioning hole of the intermediate shaft gear is solved.

Description

Technical Field

[0001] The invention belongs to the field of gearbox processing, and in particular is a radial positioning hole position fixture for an intermediate shaft gear and a use method thereof. Background Art

[0002] In the process of developing new parts, in order to ensure the position accuracy of the radial inner hole and the indexing circle tooth groove of the disc gear parts to 0.05mm, the traditional processing method is to use a four-axis machining center to find the center of the intermediate shaft gear tooth groove through a sensor. However, this method requires the investment of a four-axis machining center and a probe, and the investment in the early small batch trial production stage is huge.

[0003] In order to solve this processing problem, it is urgent to design a radial positioning hole position fixture for the intermediate shaft gear and a method of using the same. Summary of the invention

[0004] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a radial locating hole position fixture for intermediate shaft gears and a method of using the same, so as to solve the technical problem in the prior art that CNC vertical milling machines cannot directly process radial locating holes for intermediate shaft gears.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions to achieve the above problems:

[0006] A radial positioning hole position fixture for an intermediate shaft gear comprises a support plate, on which a tooth gauge support seat and an L-shaped support plate are sequentially arranged in a lateral direction;

[0007] A gear gauge mounting hole is provided on the top of the gear gauge support seat, a gear gauge is arranged in the gear gauge mounting hole, and a pressure spring is arranged between the bottom inner wall of the gear gauge mounting hole and the bottom of the gear gauge;

[0008] A mounting hole is provided on the upper part of the L-shaped support plate, a body is provided in the mounting hole, the body comprises a conical cylinder and a cylinder arranged in sequence in the transverse direction, a key groove No. 1 is provided on the inner wall of the cylinder, a disc is fixedly provided on the front side of the outer wall of the cylinder, and the rear side of the outer wall of the cylinder is fixed to the inner wall of the mounting hole;

[0009] A pull rod is arranged in the body, the end of which extends out of the cylinder and is fixedly provided with a nut body, and a handle is installed on the nut body;

[0010] The pull rod comprises a plurality of cylindrical sections which are arranged in sequence in the transverse direction and whose diameters gradually decrease from front to back, wherein a No. 2 keyway is arranged on the outer wall of one of the cylindrical sections, and a stop key is arranged in both the No. 1 keyway and the No. 2 keyway;

[0011] A convex ring is arranged on the outer wall of the transverse rear side of the second cylindrical section of the pull rod, an annular groove is formed between the convex ring and the conical cylinder of the body, and an expansion sleeve is arranged in the annular groove;

[0012] A threaded hole is arranged on the longitudinal front side wall of the tooth gauge, a threaded rod is arranged in the threaded hole, and a gripping rod is fixedly arranged on one side of the threaded rod.

[0013] The support plate and the L-shaped support plate are fixedly connected by a No. 1 hexagon socket cylindrical screw.

[0014] The support plate and the L-shaped support plate are provided with positioning pins.

[0015] A directional key is provided at the bottom of the support plate, and the directional key is fixed to the support plate by a No. 2 hexagon socket cylindrical screw.

[0016] The support plate and the tooth gauge support seat are fixedly connected by No. 3 hexagon socket cylindrical screws.

[0017] The tooth gauge support seat is provided with a machined positioning hole.

[0018] The first and second pressing plates are respectively arranged on the two longitudinal side surfaces of the gear gauge support seat, and the first and second pressing plates are both provided with threaded rod moving grooves.

[0019] A gasket is arranged between the nut body and the transverse rear end surface of the L-shaped support plate.

[0020] The circular disc is fixedly connected to the L-shaped supporting plate by means of hexagonal screws.

[0021] A method for using a radial positioning hole position fixture for an intermediate shaft gear, based on the radial positioning hole position fixture for an intermediate shaft gear, comprises the following steps:

[0022] Step 1: Move the handle to make the gear gauge move downward, thereby compressing the spring, sleeve the intermediate shaft gear on the outer wall of the pull rod, and align the teeth of the intermediate shaft gear with the gear gauge;

[0023] Step 2: Move the intermediate shaft gear towards the main body, and when the rear end face of the intermediate shaft gear is in close contact with the front end face of the disc of the main body, release the grip;

[0024] Step 3: The restoring force of the spring drives the tooth gauge to move upward, so that the top of the tooth gauge fits with the tooth groove of the intermediate shaft gear without clearance;

[0025] Step 4: Turn the handle to clamp the expansion sleeve and the inner hole of the intermediate shaft gear, and start processing the radial positioning hole of the intermediate shaft gear;

[0026] Step 5. After the processing is completed, turn the handle to loosen the inner hole of the expansion sleeve and the intermediate shaft gear, move the grip to move the gear gauge downward, compress the spring, and remove the intermediate shaft gear.

[0027] Compared with the prior art, the present invention has the following beneficial technical effects:

[0028] (I) In the present invention, different tooth gauges are selected according to the tooth grooves of the intermediate shaft gear to be processed, and different expansion sleeves are selected according to the different sizes of the inner holes of the intermediate shaft gear, so as to fix the intermediate shaft gear to be processed, thereby facilitating the subsequent processing of radial positioning holes, thereby solving the technical problem in the prior art that the CNC vertical milling machine cannot directly process the radial positioning holes of the intermediate shaft gear.

[0029] (II) After the present invention is assembled, the tooth gauge coincides with the center line of the L-shaped support plate and the main body, and the verticality error between the center line and the support plate plane is no more than 0.01mm; after assembly, the position error between the symmetry plane (positioning surface) of the tooth gauge and the center of the main body is no more than 0.02mm; a suitable compression spring is selected, and it is required that the tooth gauge has a certain spring force after assembly, that is, it can achieve 0.05mm processing of the radial positioning hole position of the intermediate shaft gear. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is a schematic diagram of the three-dimensional structure of the clamp in the present invention;

[0031] Figure 2 is a transverse cross-sectional view of the clamp of the present invention;

[0032] Figure 3 is a longitudinal cross-sectional view of the clamp of the present invention;

[0033] Figure 4 It is a structural schematic diagram of the gear gauge support seat in the fixture of the present invention;

[0034] Figure 5 It is a schematic diagram of the structure of the pull rod in the clamp of the present invention;

[0035] Figure 6 It is a structural schematic diagram of the main body in the clamp of the present invention;

[0036] Figure 7 It is a schematic structural diagram of the nut body in the clamp of the present invention.

[0037] The meanings of the various numbers in the figure are: support plate 1, gear gauge support seat 2, pressure spring 3, gear gauge 4, pull rod 5, expansion sleeve 6, stop key 7, main body 8, L-shaped support plate 9, gasket 10, nut body 11, handle 12, No. 1 hexagon socket cylindrical screw 13, locating pin 14, directional key 15, No. 2 hexagon socket cylindrical screw 16, hexagon screw 17, threaded rod 18, grip rod 19, first pressure plate 20, second pressure plate 21, No. 3 hexagon socket cylindrical screw 22, processed locating hole 23, 24 intermediate shaft gear.

[0038] The specific contents of the present invention are further explained in detail below in conjunction with embodiments. DETAILED DESCRIPTION

[0039] It should be noted that, unless otherwise specified, all components in the present invention are components known in the art.

[0040] Specific embodiments of the present invention are given below. It should be noted that the present invention is not limited to the following specific embodiments, and all equivalent changes made on the basis of the technical solution of this application fall within the protection scope of the present invention.

[0041] The present invention provides a radial positioning hole position fixture for intermediate shaft gears, comprising a support plate 1, on which a tooth gauge support seat 2 and an L-shaped support plate 9 are sequentially arranged in the transverse direction;

[0042] A gear gauge mounting hole is provided at the top of the gear gauge support seat 2, a gear gauge 4 is arranged in the gear gauge mounting hole, and a pressure spring 3 is arranged between the bottom inner wall of the gear gauge mounting hole and the bottom of the gear gauge 4;

[0043] A mounting hole is provided at the upper portion of the L-shaped support plate 9, in which a body 8 is provided. The body 8 includes a conical cylinder 801 and a cylinder 802 which are sequentially arranged in the transverse direction. A key groove No. 1 is provided on the inner wall of the cylinder 802. A disc 803 is fixedly provided on the front side of the outer wall of the cylinder 802. The rear side of the outer wall of the cylinder 802 is fixed to the inner wall of the mounting hole.

[0044] A pull rod 5 is arranged in the body 8, the end of the pull rod 5 extends out of the cylinder and is fixedly provided with a nut body 11, and a handle 12 is installed on the nut body 11;

[0045] The pull rod 5 comprises a plurality of cylindrical sections arranged in sequence in the transverse direction and with diameters gradually decreasing from front to back, wherein a second key groove is arranged on the outer wall of one of the cylindrical sections, and a stop key 7 is arranged in both the first key groove and the second key groove;

[0046] A convex ring is provided on the outer wall of the transverse rear side of the second cylindrical section of the pull rod 5, and an annular groove is formed between the convex ring and the conical cylinder of the body 8, and an expansion sleeve 6 is provided in the annular groove;

[0047] A threaded hole is provided on the longitudinal front side wall of the tooth gauge 4 , a threaded rod 18 is provided in the threaded hole, and a gripping rod 19 is fixedly provided on one side of the threaded rod 18 .

[0048] After the assembly of the present invention is completed, the center line of the gear gauge and the L-shaped support plate 9 and the main body 8 coincide, and the verticality error between the center line and the plane of the support plate 1 is no more than 0.01mm; after assembly processing, the position error between the symmetrical plane positioning surface of the gear gauge 4 and the center of the main body 8 is no more than 0.02mm; a suitable compression spring is selected, and it is required that the gear gauge 4 has a certain spring force after assembly, that is, it can achieve 0.05mm processing of the radial positioning hole position of the intermediate shaft gear.

[0049] In the above technical scheme, different tooth gauges are selected according to the tooth grooves of the intermediate shaft gear to be processed, and different expansion sleeves are selected according to the different sizes of the inner holes of the intermediate shaft gear, and then the intermediate shaft gear to be processed is fixed to facilitate the subsequent processing of radial positioning holes, thereby solving the technical problem that the CNC vertical milling machine in the prior art cannot directly process the radial positioning holes of the intermediate shaft gear.

[0050] The support plate 1 and the L-shaped support plate 9 are fixedly connected by a No. 1 hexagon socket head cylindrical screw 13 .

[0051] In the above technical solution, the screw connection facilitates installation and disassembly.

[0052] The support plate 1 and the L-shaped support plate 9 are provided with positioning pins 14 .

[0053] In the above technical solution, the positioning pin 14 is used to position the installation of the L-shaped support plate 9 on the support plate 1 .

[0054] A directional key 15 is provided at the bottom of the support plate 1 , and the directional key 15 is fixed to the support plate 1 by a No. 2 hexagon socket head cylindrical screw 16 .

[0055] In the above technical solution, the directional key 15 is used to ensure the consistency of the limit and installation position of the fixture on the machine tool.

[0056] The support plate 1 and the tooth gauge support seat 2 are fixedly connected by a No. 3 hexagon socket cylindrical screw 22.

[0057] In the above technical solution, the screw connection facilitates installation and disassembly.

[0058] A machining positioning hole 23 is provided on the tooth gauge support seat 2 .

[0059] In the above technical solution, the positioning hole 23 is processed to position and guide the tooth gauge 4 on the support plate 1 .

[0060] A first pressing plate 20 and a second pressing plate 21 are respectively disposed on the longitudinal sides of the gear gauge support seat 2 , and threaded rod moving grooves are disposed on the first pressing plate 20 and the second pressing plate 21 .

[0061] In the above technical solution, the first pressing plate 20 and the second pressing plate 21 are used to limit the longitudinal position freedom of the tooth alignment gauge 4 to ensure that the tooth alignment gauge 4 only moves along the tooth alignment direction.

[0062] A gasket 10 is provided between the nut body 11 and the rear transverse end surface of the L-shaped support plate 9 .

[0063] In the above technical solution, the gasket 10 is provided to prevent the nut body 11 from contacting the L-shaped support plate 9 during the rotation process, thereby preventing the two from wearing each other.

[0064] The disc (803) is fixedly connected to the L-shaped support plate (9) by means of hexagonal screws (17).

[0065] In the above technical solution, the screw connection facilitates installation and disassembly.

[0066] The present invention also provides a method for using a radial positioning hole position fixture for an intermediate shaft gear, based on the radial positioning hole position fixture for an intermediate shaft gear 24, comprising the following steps:

[0067] Step 1: Move the handle 19 to move the tooth gauge 4 downward, thereby compressing the spring 3, sleeve the intermediate shaft gear 24 on the outer wall of the pull rod 5, and align the teeth of the intermediate shaft gear 24 with the tooth gauge 4;

[0068] Step 2: Move the intermediate shaft gear 24 toward the main body 8. When the rear end face of the intermediate shaft gear 24 is in close contact with the front end face of the disc of the main body 8, release the grip 19.

[0069] Step 3: The restoring force of the spring 3 drives the tooth gauge 4 to move upward, so that the top of the tooth gauge 4 fits with the tooth groove of the intermediate shaft gear 24 without clearance;

[0070] Step 4: Turn the handle 12 to clamp the expansion sleeve 6 and the inner hole of the intermediate shaft gear 24, and start processing the radial positioning hole of the intermediate shaft gear 24;

[0071] Step 5, after the processing is completed, turn the handle 12 to loosen the inner hole of the expansion sleeve 6 and the intermediate shaft gear 24, move the grip rod 19 to move the tooth gauge 4 downward, compress the spring 3, and remove the intermediate shaft gear.

[0072] In the above solution, the gripping rod 19 is arranged on the threaded hole of the tooth gauge 4, and the tooth gauge 4 is reset by tightening the gripping rod 19.

Claims

1. A radial positioning hole position fixture for intermediate shaft gears, characterized in that: It comprises a support plate (1), on which a tooth gauge support seat (2) and an L-shaped support plate (9) are sequentially arranged in a transverse direction; A gear gauge mounting hole is provided at the top of the gear gauge support seat (2), a gear gauge (4) is arranged in the gear gauge mounting hole, and a pressure spring (3) is arranged between the bottom inner wall of the gear gauge mounting hole and the bottom of the gear gauge (4); A mounting hole is provided at the upper portion of the L-shaped support plate (9), a body (8) is provided in the mounting hole, the body (8) comprises a conical cylinder (801) and a cylinder (802) arranged in sequence in a transverse direction, a key groove No. 1 is provided on the inner wall of the cylinder (802), a disc (803) is fixedly provided on the front side of the outer wall of the cylinder (802), and the rear side of the outer wall of the cylinder (802) is fixed to the inner wall of the mounting hole; A pull rod (5) is arranged in the body (8), the end of the pull rod (5) extends out of the cylinder and is fixedly provided with a nut body (11), and a handle (12) is installed on the nut body (11); The pull rod (5) comprises a plurality of cylindrical sections which are arranged in sequence in the transverse direction and whose diameters gradually decrease from front to back, wherein a second key groove is arranged on the outer wall of one of the cylindrical sections, and a stop key (7) is arranged in both the first key groove and the second key groove; A convex ring is arranged on the outer wall of the lateral rear side of the second cylindrical section of the pull rod (5), an annular groove is formed between the convex ring and the conical cylinder of the body (8), and an expansion sleeve (6) is arranged in the annular groove; A threaded hole is arranged on the longitudinal front side wall of the tooth gauge (4), a threaded rod (18) is arranged in the threaded hole, and a gripping rod (19) is fixedly arranged on one side of the threaded rod (18).

2. The intermediate shaft gear radial positioning hole position fixture as claimed in claim 1, characterized in that: The support plate (1) and the L-shaped support plate (9) are fixedly connected by a No. 1 hexagon socket cylindrical screw (13).

3. The intermediate shaft gear radial positioning hole position fixture as claimed in claim 1, characterized in that: The support plate (1) and the L-shaped support plate (9) are provided with positioning pins (14).

4. The intermediate shaft gear radial positioning hole position fixture as claimed in claim 1, characterized in that: A directional key (15) is provided at the bottom of the support plate (1), and the directional key (15) is fixed to the support plate (1) by a No. 2 hexagon socket cylindrical screw (16).

5. The intermediate shaft gear radial positioning hole position fixture as claimed in claim 1, characterized in that: The support plate (1) and the tooth gauge support seat (2) are fixedly connected by a No. 3 hexagon socket cylindrical screw (22).

6. The intermediate shaft gear radial positioning hole position fixture as claimed in claim 1, characterized in that: The tooth gauge support seat (2) is provided with a machined positioning hole (23).

7. The intermediate shaft gear radial positioning hole position fixture as claimed in claim 1, characterized in that: A first pressing plate (20) and a second pressing plate (21) are respectively arranged on the longitudinal sides of the tooth gauge support seat (2), and threaded rod moving grooves are arranged on the first pressing plate (20) and the second pressing plate (21).

8. The intermediate shaft gear radial positioning hole position fixture as claimed in claim 1, characterized in that: A gasket (10) is provided between the nut body (11) and the transverse rear end surface of the L-shaped support plate (9).

9. The intermediate shaft gear radial positioning hole position fixture as claimed in claim 1, characterized in that: The circular disk (803) is fixedly connected to the L-shaped support plate (9) via hexagonal screws (17).

10. A method for using a radial positioning hole position fixture for an intermediate shaft gear, characterized in that: The intermediate shaft gear radial positioning hole position fixture according to any one of claims 1 to 9 comprises the following steps: Step 1: Move the handle (19) to make the tooth gauge (4) move downward, thereby compressing the spring (3), sleeve the intermediate shaft gear (24) on the outer wall of the pull rod (5), and align the teeth of the intermediate shaft gear with the tooth gauge (4); Step 2: Move the intermediate shaft gear (24) toward the main body (8), and when the rear end face of the intermediate shaft gear (24) is in close contact with the front end face of the disc of the main body (8), release the gripping rod (19); Step 3: The restoring force of the spring (3) drives the tooth gauge (4) to move upward, so that the top of the tooth gauge (4) and the tooth groove of the intermediate shaft gear (24) are matched without clearance; Step 4: Turn the handle (12) to clamp the expansion sleeve (6) and the inner hole of the intermediate shaft gear (24), and start processing the radial positioning hole of the intermediate shaft gear (24); Step 5: After the processing is completed, the handle (12) is turned to loosen the inner holes of the expansion sleeve (6) and the intermediate shaft gear (24), and the grip rod (19) is moved to move the tooth gauge (4) downward to compress the spring (3) and remove the intermediate shaft gear.

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