Auxiliary fixing device for gear grinding

Abstract

The utility model discloses an auxiliary fixing device for grinding teeth, which is characterized in that a through shaft hole is formed in a conical seat body, the upper end of a step-shaped structure arranged in the middle of the conical seat body is connected with a conical expansion part, the end part of a pull rod is connected with a limiting block, a separation blade is sleeved below the limiting block, and an expansion sleeve is fixed between the separation blade and the limiting block in an extruding manner; the hydraulic component is arranged at the bottom of the device through integrated arrangement, the device can be directly installed on a workbench, a space does not need to be reserved on the workbench or a special workbench does not need to be customized, the applicability is high, the cost is low, and the device is convenient to use. According to the device, the limiting block and the blocking piece are arranged and fixed through the bolt, the device is not prone to loosening after being used for a long time, stability is high, the device is further provided with the positioning block, the gear machine is pre-positioned, positioning is accurate, and the product quality is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of auxiliary tooling, in particular to an auxiliary fixing device for gear grinding. Background Art

[0002] Gear processing is a process that uses mechanical methods to obtain the specific structure and precision of gears. Gears are the core transmission components in automobile movement. The quality of their processing will have a direct impact on the vibration, noise and reliability of the mechanical assembly and even the mechanical equipment, and sometimes it will become a key factor restricting the improvement of product level. The existing patent number is 201521041821.6, which is a hydraulic tensioning gear hobbing tool. A tensioning tool that is connected to a hydraulic device is disclosed. The disadvantage is that an external hydraulic device is required to provide it with a power source, which occupies a large space and requires space for the hydraulic device to be reserved on the workbench. The adaptability is poor. Secondly, the expansion sleeve in this technical solution adopts a nut tightening method. During long-term use, the nut is prone to loosening, resulting in loose gear clamping. In addition, the positioning accuracy of the nut is poor when the technical solution is used to position the nut, which leads to a decrease in gear quality in subsequent processing. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide an auxiliary fixing device for gear grinding in view of the deficiencies of the prior art, so as to solve at least one of the above technical problems.

[0004] The utility model solves the above technical problems with the following technical solutions: an auxiliary fixing device for grinding teeth, comprising a conical seat body and a base, the conical seat body is provided with a through axial hole, the bottom of the conical seat body is provided with a piston cavity and the piston cavity is connected to the axial hole, a piston is provided in the piston cavity, an axial pull rod is provided in the axial hole, one end of the pull rod is connected to the piston and is detachably connected, the bottom of the conical seat body is sealed and connected to the base, a first oil channel is provided on the base, the first oil channel is connected to the bottom of the piston cavity, and the base is provided with The second oil channel passes through the cone seat body and is connected with the top of the piston chamber. A plurality of bolt holes are arranged on the base. A stepped structure is arranged in the middle of the cone seat body. A positioning block is fitted on the stepped structure arranged in the middle of the cone seat body. A conical expansion portion is connected to the upper end of the stepped structure arranged in the middle of the cone seat body. A limiting block is connected to the end of the pull rod. A baffle is fitted under the limiting block. An expansion sleeve is squeezed and fixed between the baffle and the limiting block. The expansion sleeve cooperates with the expansion portion. The limiting block and the baffle are connected by a first fastener.

[0005] Furthermore, a stepped structure is provided above the baffle, and a limiting ring cooperating with the stepped structure provided above the baffle is provided at the upper end of the expansion sleeve.

[0006] Furthermore, the blocking piece is provided with a plurality of threaded holes, the limiting block is provided with bolt holes, and the blocking piece is fixed to the limiting block by fastening bolts.

[0007] Furthermore, the piston is provided with a piston rod, the end of the pull rod is provided with a threaded portion, and the pull rod is connected to the piston rod through threads.

[0008] Furthermore, a stepped structure is provided on the lower side of the cone seat body, and a through hole is provided on the stepped structure, and the through hole provided on the stepped structure is provided corresponding to the bolt hole provided on the base.

[0009] Furthermore, threads are arranged inside the bolt holes on the base.

[0010] Furthermore, a threaded hole penetrating to the axial hole is provided on the side of the conical seat body, an anti-slip portion is provided at a position corresponding to the pull rod and the threaded hole, a second fastener is threadedly connected to the threaded hole, and an end of the second fastener is provided corresponding to the anti-slip portion.

[0011] Furthermore, a chamfer structure is provided at the upper end of the positioning block.

[0012] Furthermore, the positioning block is connected to the cone seat body through bolts.

[0013] The beneficial effects of the utility model are:

[0014] The utility model arranges the hydraulic component at the bottom of the device through an integrated arrangement, and the device can be directly installed on a workbench without reserving space on the workbench or customizing a special workbench, and has strong applicability. The device is fixed by bolts by arranging a limited position block and a baffle, and is not easy to loosen after long-term use, and has strong stability. The device is also provided with a positioning block to pre-position the gear machine, and the positioning is accurate, thereby further improving the product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model.

[0016] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0017] Conical seat body 1; expansion part 2; piston cavity 3; axial hole 4; piston 5; piston rod 6; pull rod 7; threaded part 8; base 9; first oil passage 10; second oil passage 11; fixing hole 12; baffle 13; expansion sleeve 14; limit block 15; first fastener 16; positioning block 17; anti-slip part 18; second fastener 19. DETAILED DESCRIPTION

[0018] The present invention is further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. In addition, it should be understood that after reading the contents of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the claims attached to the application.

[0019] Example 1: See Figure 1 It is a schematic diagram of each structure of the utility model, including a conical seat body 1 and a base 9. The conical seat body 1 is provided with a through axial hole 4. The bottom of the conical seat body 1 is provided with a piston chamber 3 and the piston chamber 3 is communicated with the axial hole 4, which is convenient for the connection between the pull rod 7 and the piston chamber 3. A piston 5 is provided in the piston chamber 3, and an axial pull rod 7 is provided in the axial hole 4. One end of the pull rod 7 is connected to the piston 5 and is detachably connected, which is convenient for the installation of the pull rod 7 and the subsequent replacement of the expansion sleeve 14. The bottom of the conical seat body 1 is sealed and connected with the base 9. The split design facilitates the installation of the piston 5. A first oil channel 10 is provided on the base 9, and the first oil channel 10 is communicated with the bottom of the piston chamber 3. A second oil channel 11 is provided on the base 9 and the second oil channel 11 passes through the conical seat body 1 and is communicated with the top of the piston chamber 3. The second oil channel 11 is at The connection between the base 9 and the conical seat body 1 is sealed, and a plurality of bolt holes are provided on the base 9 for fixing the device on a workbench. A stepped structure is provided in the middle of the conical seat body 1, and a positioning block 17 is fitted at the stepped structure provided in the middle of the conical seat body 1. The positioning block 17 positions the gear. The upper end of the stepped structure provided in the middle of the conical seat body 1 is connected to a conical expansion portion 2, and the end of the pull rod 7 is connected to a limiting block 15. A baffle 13 is fitted under the limiting block 15. An expansion sleeve 14 is squeezed and fixed between the baffle and the limiting block 15. The expansion sleeve 14 is fixed by extrusion, which further facilitates subsequent maintenance of the expansion sleeve 14 or replacement of expansion sleeves 14 of different specifications. The expansion sleeve 14 cooperates with the expansion portion 2, and the limiting block 15 and the baffle 13 are connected by a first fastener 16.

[0020] Preferably, a stepped structure is provided above the baffle 13, and a limiting ring cooperating with the stepped structure provided above the baffle 13 is provided at the upper end of the expansion sleeve 14, so that the baffle 13 and the limiting block 15 are firmly fastened to prevent the first fastener 16 from loosening due to deformation of the expansion sleeve 14 due to long-term use.

[0021] Preferably, a plurality of threaded holes are provided on the blocking piece 13, a bolt hole is provided on the limiting block 15, and the blocking piece 13 is fixed to the limiting block 15 by fastening bolts.

[0022] Preferably, the piston 5 is provided with a piston rod 6 , and the end of the pull rod 7 is provided with a threaded portion 8 . The pull rod 7 is connected to the piston rod 6 through threads, so that the installation of the pull rod 7 is convenient.

[0023] Preferably, a stepped structure is provided on the lower side of the conical seat body 1 and a through hole is provided in the stepped structure. The through hole provided in the stepped structure corresponds to the bolt hole provided on the base 9, so as to facilitate fixing of the device.

[0024] Preferably, the bolt holes on the base 9 are provided with threads inside, and when the bolts are used for fixing, the base 9 and the conical seat body 1 are further fixed.

[0025] Preferably, a threaded hole penetrating to the axial hole 4 is provided on the side of the conical seat body 1, an anti-slip portion 18 is provided at a position corresponding to the pull rod 7 and the threaded hole, a second fastener 19 is threadedly connected to the threaded hole, and an end of the second fastener 19 is provided corresponding to the anti-slip portion 18, which further fixes the pull rod 7 to avoid failure of the hydraulic system and loosen the expansion sleeve 14.

[0026] Preferably, the upper end of the positioning block 17 is provided with a chamfered structure to facilitate the installation of the gear.

[0027] Preferably, the positioning block 17 is connected to the cone seat body 1 by bolts, so that different positioning blocks 17 can be easily replaced to adapt to gears of different specifications.

[0028] When using the utility model, the oil channel of the device is connected to the hydraulic oil pump, the gear is placed on the positioning block 17 for pre-positioning, the hydraulic oil pump is started, the second oil channel 11 supplies oil, the pull rod 7 is pulled down, the expansion sleeve 14 expands to clamp the gear from the inside of the gear, the pull rod 7 is fixed by the second fastener 19 to enhance stability, the operator processes the gear, and after the processing is completed, the first oil channel 10 supplies oil to lift the pull rod 7, the expansion sleeve 14 is recovered, and the gear is released.

[0029] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An auxiliary fixing device for gear grinding, characterized in that: The invention comprises a conical seat body (1) and a base (9), wherein the conical seat body (1) is provided with a through-going axial hole (4), the bottom of the conical seat body (1) is provided with a piston chamber (3) and the piston chamber (3) is communicated with the axial hole (4), a piston (5) is arranged in the piston chamber (3), an axial pull rod (7) is arranged in the axial hole (4), one end of the pull rod (7) is connected to the piston (5) and is detachably connected, the bottom of the conical seat body (1) is sealingly connected to the base (9), the base (9) is provided with a first oil passage (10), the first oil passage (10) is communicated with the bottom of the piston chamber (3), the base (9) is provided with a second oil passage (11) and the second oil passage (11) passes through the conical seat body ( 1) is connected to the top of the piston chamber (3), the base (9) is provided with a plurality of bolt holes, the middle part of the conical seat body (1) is provided with a stepped structure, the stepped structure provided in the middle part of the conical seat body (1) is fitted with a positioning block (17), the upper end of the stepped structure provided in the middle part of the conical seat body (1) is connected with a conical expansion part (2), the end of the pull rod (7) is connected to a limit block (15), a baffle (13) is fitted under the limit block (15), an expansion sleeve (14) is squeezed and fixed between the baffle and the limit block (15), the expansion sleeve (14) is fitted with the expansion part (2), and the limit block (15) and the baffle (13) are connected via a first fastener (16).

2. An auxiliary fixing device for gear grinding according to claim 1, characterized in that: A stepped structure is provided above the baffle (13), and a limiting ring is provided at the upper end of the expansion sleeve (14) and cooperates with the stepped structure provided above the baffle (13).

3. The auxiliary fixing device for gear grinding according to claim 1, characterized in that: The baffle (13) is provided with a plurality of threaded holes, the limit block (15) is provided with bolt holes, and the baffle (13) is fixed to the limit block (15) by means of fastening bolts.

4. The auxiliary fixing device for gear grinding according to claim 1, characterized in that: The piston (5) is provided with a piston rod (6), the end of the pull rod (7) is provided with a threaded portion (8), and the pull rod (7) is connected to the piston rod (6) via threads.

5. The auxiliary fixing device for gear grinding according to claim 1, characterized in that: The lower side of the cone seat body (1) is provided with a stepped structure, and the stepped structure is provided with a through hole, and the through hole provided in the stepped structure is provided corresponding to the bolt hole provided on the base (9).

6. The auxiliary fixing device for gear grinding according to claim 5, characterized in that: The bolt hole on the base (9) is provided with a thread inside.

7. The auxiliary fixing device for gear grinding according to claim 1, characterized in that: A threaded hole penetrating to the shaft hole (4) is provided on the side of the conical seat body (1); an anti-slip portion (18) is provided at a position corresponding to the threaded hole of the pull rod (7); a second fastener (19) is threadedly connected to the threaded hole; and an end of the second fastener (19) is provided corresponding to the anti-slip portion (18).

8. The auxiliary fixing device for gear grinding according to claim 1, characterized in that: The upper end of the positioning block (17) is provided with a chamfered structure.

9. The auxiliary fixing device for gear grinding according to claim 1, characterized in that: The positioning block (17) is connected to the cone seat body (1) via bolts.

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