CJWinter How To Series

CJWinter is excited to announce that we’ll be starting a new how-to video series in order to make the operation, rebuilding, setting, and/or recalibration of our attachments more accessible and easier to understand.

The first video in this ongoing series deals with taper setting adjustments on pneumatic attachments.

Features and Benefits of CJWinter’s Pneumatic Attachments

Our pneumatic thread rolling attachments offer a range of unique benefits, including:

Convenient setup and adjustments

  • Clients get out-of-box-ready attachments that are easily adjustable
  • Users can quickly adjust feed rate and eliminate downtime

Equalized rolling pressure

  • Keeps thread rolling away from collet, guaranteeing thread concentricity
  • Eliminates side pressure on spindles and other parts
  • Allows for longer length and diameter rolling

Quick adjustments of pitch diameter

  • Users can make adjustments within .0002 inch without stopping

Patented roll compensator

  • Simplifies roll timing
  • Ensures perfect roll synchronization
  • Eliminates flaking
  • Allows for roll timing adjustments in the machine without disassembling gears
Single cam for entire size range
  • Allows for significant cost savings
Quick adjustments of penetration (roll feed) rate
  • Eliminates the risk of unnecessary downtime
Chip purge line
  • Keeps the gear train free of chips, which minimizes the cost and need for replacements
Quality components
  • 100% complete interchangeability for replacement parts
  • Zero time wasted on retrofitting
Secondary threading
  • Eliminates the need for a costly new machine
  • Allows an inexpensive lathe to be used as an auxiliary thread rolling machine

How-To adjust and set taper setting on pneumatic attachments

Double Dog Point Vs. Tapered Set Screw Attachments

There are two basic types of taper setting mechanisms in our pneumatic attachments: double dog point and tapered set screw. Learn more about these two options below.

Type A — Double Dog Point is found in our 125 Series, 141/151 Series, 160/170 Series

Tools needed for this type of attachment include: surface plate, Allen wrench, adjustable indicator stand, .0001-inch resolution indicator, and riser block (2 inches x 2.5 inches x 6 inches).

To make taper setting adjustments on this pneumatic attachment, users must follow these step-by-step instructions:

  1. Remove thread rolls.
  2. Place attachment on rise block.
  3. Indicate the carbide roll pin on both sides to assess parallelism.
  4. Loosen taper adjust set screw with an Allen wrench, and move accordingly.
  5. Tighten the locking set screw to secure carbide roll pin
  6. Re-indicate, zeroing on the immobile pin side.
  7. Indicate the moving side, and document reading.
  8. Repeat steps 2 - 7 required taper is achieved.
  9. Do the same on the other arm.

Type B — Tapered Set Screw is found in our 134 Series, 162/172 Series

For this type of attachment, users require the following tools: surface plate, Allen wrench, flat-bladed screwdriver, adjustable indicator stand, .0001-inch resolution indicator, and riser block (2 inches x 2.5 inches x 6 inches).

Taper setting adjustment instructions are as follows:

  1. Remove thread rolls.
  2. Place attachment on rise block.
  3. Indicate the carbide roll pin on both sides to assess parallelism.
  4. Loosen locking set screw with an Allen wrench.
  5. Pull out carbide roll pin.
  6. Turn the taper set screw in or out one revolution.
  7. Slide the carbide roll pin back in.
  8. Tighten down the lock-in set screw.
  9. Re-indicate, zeroing on the immobile pin side.
  10. Indicate the moving side, and document reading.
  11. Repeat steps 2 - 10 until required taper is achieved.
  12. Do the same on the other arm

Learn More

CJWinter backs all of our products and services with a deep commitment to constant improvement and innovation. We’re proud to offer the following guarantees to all of our valued customers:

  • Unmatched customer service — We offer in-depth online support, engineering support, and scheduled on-site training services.
  • Superior tools — High-strength design and construction prolong tool life and allow for superior surface finish.
  • Fast delivery — We ship 80% of our thread rolls within 24 hours of client ordering.

For more detailed pneumatic attachment instructions and visuals, check out our how-to video here.

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CJWinter & Davenport at PMPA National Tech Conference 2018

CJWinter & Davenport are excited to announce that they will be attending the 2018 PMPA National Technical Conference from April 21-24 in Rosemont, IL.

We will join other technical and quality leaders from across the country to exhibit the latest technology and machining capabilities used by precision machining shops today. Visit our booths #33 and #34 during the event and speak with our industry leading experts.

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New 132EG Cross Slides Offer Added Strength, Easier Maintenance

CJWinter’s 132EG series cross slides have recently been updated to include several new features to improve serviceability, longevity and quality of the slides.

The top blocks are now smaller and position specific, making them more similar to the classic Davenport size for 1st and 2nd position. 

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CJWinter Wins PMPA’s Technical Member Participation Award

At CJWinter, we’re proud to be part of a vibrant manufacturing community — and we’re equally proud to maintain active membership in various industry associations. From the American Petroleum Institute (API) to the Business Council of New York State, Inc., we hold memberships across a range of prominent groups.

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PMPA Member CJWinter Finds Success in Superior Customer Service and Quick Turnaround Times 

CJWinter began as a supporting manufacturer for Davenport screw machines. Over the years however, the company has expanded its product offerings to include a complete line of thread-rolling dies, both for internal use and for other manufacturers, and has found great success due to a passion for excellent customer service. CJWinter is also a member of PMPA and continues to benefit from the organization’s networking opportunities, wealth of information and access to educational materials.

CJWinter's success story has recently been featured in a Production Machining Magazine article:

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Pitch Diameter, Major Diameter, Blank Diameter - What are They?

As mentioned in our last blog post, in order to achieve a fully optimized thread rolling process, there are two diameters that come into play: Pitch Diameter and Blank Diameter. The means by which a blank diameter is calculated will vary based on whether a straight thread or a tapered pipe thread is the end goal. In order to calculate the blank diameter for a straight thread you must first have an understanding of what the maximum and minimum pitch diameters are, as well as an understanding of the maximum and minimum of the major diameter. 

But, what’s rarely touched upon is what all of those terms mean. In this blog post, we’ll take a step back and walk through what each of these thread rolling keywords are, and explain how they interface together.

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Proper Tooling & Gauges to Thread Roll Pre-Plate Parts Efficiently for External Threads

A guide to the proper tooling and gauges required for efficiently thread rolled pre plate parts.

It is important when manufacturing component parts to take into account the correct plating requirements.  Having knowledge of the specific plating specifications as well as making allowances to the thread rolls and gages are critical in producing a functional thread. Below are some important things to consider that will ultimately allow you to run pre-plate parts efficiently.
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3 Reasons to Use Thread Rolling for your Next Project

Thread rolling is known as a cold metal forging process performed on ductile metals. Thread rollers often have to decide between two threading options for creating screw threads - thread rolling and thread cutting.

Each with its unique characteristics and capabilities, both threading processes are credited for creating the highest produced machine element every year.

Thread rolling is different than cutting, grinding, and chasing in that it does not remove any metal, but instead uses steel dies to displace and mold the metals.

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The Fundamentals of Thread Rolling

A highly versatile cold forming process, thread rolling can be done on any type of ductile metal to harden, strengthen, or change the material’s physical properties in other ways.

Thread rolling makes use of hardened steel cylindrical dies to shape materials; the dies, imprinted with the thread profile, penetrate the work metal at ultra-high pressures in order to displace and mold it into a mirror-image thread. Unlike traditional cutting and grinding methods, no metal is lost or cut away during the thread rolling process; it is simply reshaped.

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New CNC Machines and Thread Grinding Capability At CJWinter

CJWinter is proud to announce the installation of several new seven-axis computer numerical controlled (CNC) grinding machines in our facility.  

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