CN211360747U

CN211360747U - Pump body hole reverse boring mechanism in gear pump

Info

Publication number: CN211360747U
Application number: CN201922489464.4U
Authority: CN
Inventors: 叶玉堂; 郑尊纲
Original assignee: Suzhou Renowell Hydraulic Pump Co ltd
Current assignee: Suzhou Renowell Hydraulic Pump Co ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-08-28
Anticipated expiration: 2029-12-31

Abstract

The utility model discloses a pump body hole reverse boring mechanism in gear pump, include: the gear pump comprises a taper shank matched with a taper hole of a main shaft of a machining center, at least one extension bar detachably connected with the taper shank, a fine-adjustment fine boring head arranged at the end part of the extension bar and matched with the extension bar, and a blade arranged on the fine-adjustment fine boring head, wherein the position of the blade is adjusted and controlled by the cooperation of the extension bar and the fine-adjustment fine boring head so as to sequentially machine a middle inner hole and an end inner hole of a pump body in the gear pump. The utility model discloses a pump body hole reverse boring mechanism can be in the gear pump the fixed back of the pump body, processes its hole in proper order, need not the upset in the course of working or the adjustment gear pump body, has avoided the influence of upset or adjustment error to the hole axiality, has improved the machining precision of the pump body in the gear pump.

Description

Pump body hole reverse boring mechanism in gear pump

Technical Field

The utility model relates to a bore hole technology of the pump body in the hydraulic pressure crescent gear pump, in particular to pump body hole reverse boring mechanism in gear pump.

Background

As shown in fig. 1 to 2, an intermediate inner hole 101 of a middle pump body 100 of the internal gear pump is a bearing surface of the ring gear and is used for forming a friction pair with an outer circle of the ring gear. The end inner holes 102 at two ends of the middle pump body are respectively connected with the outer circle rabbets of the front pump shell and the rear pump shell in a positioning way, and sliding bearings are arranged in the eccentric holes in the front pump shell and the rear pump shell and used for supporting the shaft necks of the outer gear shafts, so that the coaxiality and the verticality relative to the end surface A of the inner holes at two ends of the middle pump body have high requirements. The X-eccentricity and Y-eccentricity requirements, shown by the dimensions of the position of the intermediate bore 101 relative to the end bore 102, are also high.

In the prior art, an end surface A, an end inner hole 102 close to the end surface A and a middle inner hole 101 are machined firstly, and then the end inner hole 102 far away from the end surface A is machined by turning over and using a clamp positioning or indexing mechanism to rotate for 180 degrees. The coaxiality of the two end bores 102 is difficult to achieve due to positioning errors of the jig or indexing errors of the indexing mechanism.

SUMMERY OF THE UTILITY MODEL

The utility model provides a pump body hole reverse boring mechanism in gear pump to solve the above-mentioned technical problem who exists among the prior art.

In order to solve the technical problem, the utility model provides a pump body hole reverse boring mechanism in gear pump, include: the gear pump comprises a taper shank matched with a taper hole of a main shaft of a machining center, at least one extension bar detachably connected with the taper shank, a fine-adjustment fine boring head arranged at the end part of the extension bar and matched with the extension bar, and a blade arranged on the fine-adjustment fine boring head, wherein the position of the blade is adjusted and controlled by the cooperation of the extension bar and the fine-adjustment fine boring head so as to sequentially machine a middle inner hole and an end inner hole of a pump body in the gear pump.

Preferably, the taper shank is a 7:24 taper shank.

Preferably, the taper shank is provided with a pull nail so as to be connected with a main shaft taper hole of the machining center.

Preferably, the fine tuning fine boring head includes: the fine boring head comprises a fine boring head body, a fine adjustment mechanism arranged on the fine boring head body and a blade seat arranged on the fine adjustment mechanism, wherein the blade is arranged on the blade seat.

Preferably, the fine boring head body is further provided with an inner hexagonal set screw for fixing the fine adjustment mechanism.

Preferably, the blade seat is installed upward, a square groove is formed in the blade seat, and a square projection corresponding to the square groove is formed in the fine adjustment mechanism.

Preferably, the extension bar and the fine adjustment fine boring head are respectively fastened by a fastener.

Preferably, the pump body of the gear pump to be processed is fixedly arranged on a workbench of a processing center.

Compared with the prior art, the utility model discloses a pump body hole reverse boring mechanism in gear pump, include: the gear pump comprises a taper shank matched with a taper hole of a main shaft of a machining center, at least one extension bar detachably connected with the taper shank, a fine-adjustment fine boring head arranged at the end part of the extension bar and matched with the extension bar, and a blade arranged on the fine-adjustment fine boring head, wherein the position of the blade is adjusted and controlled by the cooperation of the extension bar and the fine-adjustment fine boring head so as to sequentially machine a middle inner hole and an end inner hole of a pump body in the gear pump. The utility model discloses a pump body hole reverse boring mechanism in gear pump, through the extension bar is adjustable the blade is in position on vertical to the different degree of depth hole position that makes the pump body in blade and the gear pump corresponds. Through fine-tuning can adjust the blade is in horizontal ascending position, realizes carrying out the precision finishing to the hole of the pump body in the gear pump. The utility model discloses a pump body hole reverse boring mechanism can be in the gear pump the fixed back of the pump body, processes its hole in proper order, need not in the course of working upset or the adjustment gear pump in the pump body, has avoided the influence of secondary positioning error to the internal hole axiality, has improved the machining precision of the pump body in the gear pump.

Drawings

FIG. 1 is a schematic diagram of a pump body of a conventional gear pump;

FIG. 2 is a sectional view taken along plane G-G of FIG. 1;

FIG. 3 is a schematic structural view of a pump body inner hole reverse boring mechanism in the gear pump of the present invention;

fig. 4a to fig. 4c are schematic views of the inner hole reverse boring mechanism of the pump body in the gear pump of the present invention.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. It should be noted that the drawings of the present invention are simplified and use non-precise ratios, and are only used for the purpose of facilitating and clearly assisting the description of the embodiments of the present invention.

As shown in fig. 3, referring to fig. 1 and 2, the utility model provides a pump body hole reverse boring mechanism in gear pump, including: the fine-adjustment fine boring machine comprises a taper shank 1 matched with a taper hole of a main shaft of a machining center, at least one extension bar 2 detachably connected with the taper shank 1, a fine-adjustment fine boring head 3 arranged at the end part of the extension bar 2 and matched with the extension bar 2, and a blade 4 arranged on the fine-adjustment fine boring head 3. The position of the blade 4 is adjusted by matching the extension rod 2 and the fine-tuning fine boring head 3, so that the blade 4 is aligned to different positions inside the pump body 100 in the gear pump, the middle inner hole 101 and the end inner hole 102 of the pump body 100 in the gear pump can be sequentially machined, the pump body 100 in the gear pump does not need to be moved in the whole process, the pump body 100 in the gear pump is prevented from shifting or overturning in the machining process, errors caused by re-positioning after shifting or overturning are avoided, and the machining precision of the pump body 100 in the gear pump is improved.

Preferably, the taper shank 1 is a 7:24 taper shank, and the pull nail 5 is arranged on the taper shank 1 so as to be connected and fastened with a main shaft taper hole of a machining center and ensure the connection stability of the taper shank 1.

With continued reference to fig. 3, the fine-tuning fine boring head 3 comprises: the fine boring head comprises a fine boring head body 31 fixedly connected with the extension bar 2, a fine adjustment mechanism 32 arranged on the fine boring head body 31 and a blade seat 33 arranged on the fine adjustment mechanism 32, wherein the blade 4 is arranged on the blade seat 33. Further, the fine boring head body 31 is further provided with an inner hexagonal set screw 34 for fixing the fine adjustment mechanism 32.

Preferably, the insert seat 33 is mounted upwardly. Further, be provided with the square groove on the blade seat 33, fine-tuning 32 is last set up with the square convex block that the square groove corresponds, both cooperations are connected to it is fixed through fastener 6, so during operation in fact, can be as required quick replacement and adjustment blade seat 33.

Preferably, the extension bar 2 and the fine tuning fine boring head 3 are fastened by fasteners 6, respectively, and the number of the extension bars 2 can be adjusted as needed. That is, the extension bar 2 is fixedly connected with the taper shank 1 through a fastener 6, and the fine tuning fine boring head 3 is fixedly connected with the extension bar 2 through the fastener 6. Of course, when the extension bar 2 is provided with a plurality of groups, the extension bar 2 and the extension bar 2 are also fixedly connected through the fastening piece 6. Preferably, the fastener 6 in the present embodiment is preferably an allen cap screw or an allen key screw.

Referring to fig. 4a to 4c, in the embodiment, when the inner hole reverse boring mechanism of the pump body in the gear pump works, the pump body 100 in the gear pump to be machined is firstly fixedly installed on a workbench of a machining center. Specifically, the end face a of the pump body 100 in the gear pump faces upward, and the other end face corresponding to the end face a is directly positioned on a workbench of a machining center, and meanwhile, the pump body 100 in the gear pump can be positioned and compressed by utilizing a pin hole and a stepped hole in the pump body 100 in the gear pump.

During processing, the pin holes on the end face A are finely milled and the pin holes on the end face A are drilled and reamed.

Then, utilize the utility model discloses a pump body hole reverse boring mechanism in gear pump processes the tip hole 102 that is close to terminal surface A one side earlier. The structure of the pump body inner hole reverse boring mechanism in the gear pump is shown in fig. 4a, and the extension rod 2 is not needed. The insert holder 33 is mounted downward, and the machining center spindle is fed downward while rotating forward, so that the end inner hole 102 can be bored.

Next, the intermediate inner bore 101 of the pump body 100 in the gear pump is machined. The structure of the pump body inner hole reverse boring mechanism in the gear pump is shown in fig. 4b, and the extension rod 2 is not needed. Similarly, the insert holder 33 is mounted downward, and the center spindle is rotated forward and fed downward, thereby boring the center bore 101.

Finally, as shown in fig. 4c, an end inner hole 102 on the side of the pump body 100 away from the end face a in the gear pump is machined. By using the extension bar 2, the insert seat 33 is mounted upward, and the machining center spindle is reversed and fed upward, so that the end inner hole 102 can be reverse bored.

The steps can be simultaneously processed in one-time clamping of the pump body 100 in the gear pump, and the coaxial precision and the vertical precision of the two end inner holes 102 relative to the end surface A and the position size of the middle inner hole 101 relative to the two end inner holes 102 are ensured. So adopt the utility model discloses a pump body 100 processing in pump body hole reverse boring mechanism in to the gear pump has the advantage that the machining precision is high and machining efficiency is high.

To sum up, the utility model discloses a pump body hole reverse boring mechanism in gear pump, through extension bar 2 is adjustable blade 4 is in position on vertical to the different degree of depth hole position that makes pump body 100 in blade 4 and the gear pump corresponds. Through fine-tuning 3 can adjust blade 4 is in horizontal ascending position, realizes carrying out the precision finishing to the hole of pump body 100 in the gear pump. The utility model discloses a pump body hole reverse boring mechanism can be in the gear pump behind pump body 100 is fixed, processes its hole in proper order, need not in the course of working upset or the adjustment gear pump in pump body 100, has avoided the influence of positioning error to the internal hole axiality, has improved pump body 100's machining precision and machining efficiency in the gear pump.

It will be apparent to those skilled in the art that various changes and modifications may be made to the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. The utility model provides a pump body hole reverse boring mechanism in gear pump which characterized in that includes: the gear pump comprises a taper shank matched with a taper hole of a main shaft of a machining center, at least one extension bar detachably connected with the taper shank, a fine-adjustment fine boring head arranged at the end part of the extension bar and matched with the extension bar, and a blade arranged on the fine-adjustment fine boring head, wherein the position of the blade is adjusted and controlled by the cooperation of the extension bar and the fine-adjustment fine boring head so as to sequentially machine a middle inner hole and an end inner hole of a pump body in the gear pump.

2. The pump body inner hole reverse boring mechanism in the gear pump as claimed in claim 1, wherein the taper shank is a 7:24 taper shank.

3. The pump body inner hole reverse boring mechanism in the gear pump as claimed in claim 1, wherein the taper shank is provided with a pull nail for connecting and fastening with a main shaft taper hole of a machining center.

4. The pump body inner hole reverse boring mechanism in the gear pump as claimed in claim 1, wherein the fine adjustment fine boring head comprises: the fine boring head comprises a fine boring head body, a fine adjustment mechanism arranged on the fine boring head body and a blade seat arranged on the fine adjustment mechanism, wherein the blade is arranged on the blade seat.

5. The pump body inner hole reverse boring mechanism in the gear pump as claimed in claim 4, wherein the fine boring head body is further provided with an inner hexagonal set screw for fixing the fine adjustment mechanism.

6. The pump body inner hole reverse boring mechanism in the gear pump as claimed in claim 4, wherein the blade seat is installed upward, a square groove is formed in the blade seat, and a square protrusion corresponding to the square groove is formed in the fine adjustment mechanism.

7. The pump body bore reverse boring mechanism of the gear pump as claimed in claim 1, wherein the extension bar and the fine adjustment fine boring head are fastened by fasteners, respectively.

8. The reverse boring mechanism for the inner hole of the pump body in the gear pump as claimed in claim 1, wherein the pump body in the gear pump to be machined is fixedly installed on a workbench of a machining center.